Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc302ca7f83d6faf…

MALICIOUS

PDF

77.1 KB Created: 2021-06-10 15:49:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 25745ddac01562233f36318166918e5d SHA-1: 40e1ae4875f924e8d3640ef62178911812c109bd SHA-256: bc302ca7f83d6faf3c99b4fa00e6fa1b29ad1ba446313dc9895361cd2b486ce8
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file is identified as malicious by ML classifiers and ClamAV, and contains a large number of external links, suggesting it is part of a link farm or SEO spam operation. The document body, though heavily obfuscated, appears to be a lure related to a 'baby girl head circumference chart'. The presence of embedded URLs and the overall structure strongly indicate an attempt to redirect users to potentially malicious or spam-related content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://philabc.ru/pbw?utm_term=baby+girl+head+circumference+chart PDF link annotation
    • https://wimazuwog.weebly.com/uploads/1/3/0/7/130740080/f1193.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484631/normal_5ff771c0ab07c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388611/normal_5fd84de1f3cc0.pdfIn PDF document text
    • https://befadileniralan.weebly.com/uploads/1/3/6/0/136082268/5af65d310.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379841/normal_6067caa668d9d.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4486036/normal_60b3d8c91fc00.pdfIn PDF document text
    • https://kivogumit.weebly.com/uploads/1/3/1/0/131070776/zebij.pdfIn PDF document text
    • https://xozojijeb.weebly.com/uploads/1/3/4/4/134436315/5fd907a56df21.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404502/normal_5fe3b51cb6edf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479433/normal_6035cfc045cdf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367650/normal_60c1105514ce8.pdfIn PDF document text
    • https://kupafejesuxab.weebly.com/uploads/1/3/4/6/134650707/81d99.pdfIn PDF document text
    • https://litolojinoforiw.weebly.com/uploads/1/3/4/7/134721995/lebazefadoxefa.pdfIn PDF document text
    • https://mixifomako.weebly.com/uploads/1/3/1/1/131164472/bejesutolatin_waleredufif_xurarofiza.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368240/normal_606a26822bcf5.pdfIn PDF document text
    • https://nakixeke.weebly.com/uploads/1/3/4/3/134354053/4514786.pdfIn PDF document text
    • https://letenusesek.weebly.com/uploads/1/3/4/3/134310332/816cf811.pdfIn PDF document text
    • https://xeludopoveju.weebly.com/uploads/1/3/4/5/134528604/5345837.pdfIn PDF document text
    • https://mudikelupiviw.weebly.com/uploads/1/3/5/3/135300608/8984346.pdfIn PDF document text
    • https://zipobirin.weebly.com/uploads/1/3/5/3/135386694/xugusidosowejedaxuve.pdfIn PDF document text
    • https://wojatobarub.weebly.com/uploads/1/3/4/6/134612389/tesuveti-degiluxejipeguv-durofesu-banadagafi.pdfIn PDF document text
    • https://werakemil.weebly.com/uploads/1/3/5/9/135973214/xotalu-gagamofod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374177/normal_6034cdb47de6b.pdfIn PDF document text
    • https://kigovedinefetup.weebly.com/uploads/1/3/1/3/131384362/b8e4aaedc92e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/845002a4-188f-496c-843e-129089c36146/how_to_use_a_hoover_steamvac_agility.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f8e2b62-e4ce-41d4-8c49-317bcb103ee4/93935865409.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9cca1e3-83d2-47d2-84fa-c42e18a4e7c6/69108813107.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B8 5548 bytes
SHA-256: 805f2e7ce92fc9b8e0246417272ee0b30dc06640dc54d1790dc488f7be7eaf6f
font_01_sfnt_off00010374.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10374 10172 bytes
SHA-256: f86cc7bd358e629a03cec608d8caa0f45acd9a25912f8710d0097c49249852a2

Open this report in the interactive analyzer, or submit your own file for analysis.