Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe95c2117b96ed37…

MALICIOUS

PDF

107.4 KB Created: 2021-05-03 05:14:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 92398472ad66bb9b11aff09cb41a1772 SHA-1: b7677e2c946422d98ac451585299212aee6e4436 SHA-256: fe95c2117b96ed374ff6f0edb4f649a2c4441d2455b3e5efcd7f2fb0b1ec9e80
164 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses an urgency-based lure. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • 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://resalured.ru/strik?utm_term=how+much+does+tivo+lifetime+subscription+cost PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4457876/normal_5fee41b4c2303.pdfIn PDF document text
    • https://girowefado.weebly.com/uploads/1/3/5/3/135349553/folozosasiwososokuri.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497071/normal_606b74692a81b.pdfIn PDF document text
    • https://nemelodanunoju.weebly.com/uploads/1/3/0/8/130874480/8386902.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408588/normal_604ab881737ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401982/normal_6065afa382251.pdfIn PDF document text
    • https://gibitiwatu.weebly.com/uploads/1/3/0/7/130776060/virufeguwatevag.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/0ecfd4c7-d4f6-44d7-b2c9-f5d09695a1d7/power_pressure_cooker_xl_beans_recipe.pdfIn PDF document text
    • http://sawesupunozigiv.atwebpages.com/74302843467.pdfIn PDF document text
    • https://s3.amazonaws.com/zoromexemuzid/gezumupifodumitipefelagi.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawe/dejezode.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/lookbook_design_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f77493c-43eb-4ab7-8d80-1e777efa1f6f/87442964817.pdfIn PDF document text
    • https://s3.amazonaws.com/susonanezaj/android_tv_box_rk_max.pdfIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/lijewifisarodumegunozoga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7062906a-9600-4a63-a2e0-2d88394d16a8/dunkin_vanilla_iced_coffee_with_cream_calories.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/50374235708.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1576047c-78d9-4549-82ea-73db92d3accc/bible_study_joy_vs._happiness.pdfIn PDF document text
    • https://s3.amazonaws.com/jedobufudajewu/74021167097.pdfIn PDF document text
    • http://raxajabidadida.onlinewebshop.net/63830350652.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015860.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15860 5320 bytes
SHA-256: 6f70721f4485b1b1e8fb1dc7c34b666a9a73e9f016371f1920bd4b2f22c3b768
font_01_sfnt_off00016a5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16A5E 11396 bytes
SHA-256: 91f79a585ecba1f5f969f48e3f0c32050bdae453075ccffe53ddecd328e3ea1d
font_02_sfnt_off00019137.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19137 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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