Malicious PDF — malware analysis report

Static analysis result for SHA-256 5be59342d5d15c10…

MALICIOUS

PDF

78.3 KB Created: 2021-05-20 09:44:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: b2b31f44ffdd70124322f1fc1c4a5b23 SHA-1: 1d4f8d8fde3effe72ec261b44cf7051cb43ace04 SHA-256: 5be59342d5d15c1082bb52d39b77da1e6474dbdf69016ec899401d9829c5873e
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, specifically identified as a phishing trojan by ClamAV. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The document body, though partially garbled, contains a title related to Instagram video views, which is likely a lure to entice clicks on the embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • 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.
  • 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://ponafet.ru/strik?utm_term=tem+como+saber+quem+visualizou+meu+v%25C3%25ADdeo+no+instagram PDF link annotation
    • https://fanakigefepawaf.weebly.com/uploads/1/3/0/8/130873796/4360106.pdfIn PDF document text
    • https://xedukigujidazan.weebly.com/uploads/1/3/4/5/134512451/7a96eb0310c4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422373/normal_6004c0de13750.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489835/normal_603495410ccf8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387821/normal_5fcf126c61957.pdfIn PDF document text
    • https://saripubisopa.weebly.com/uploads/1/3/5/3/135322362/8714344.pdfIn PDF document text
    • https://lerizizevu.weebly.com/uploads/1/3/4/3/134314130/vasorazenaverakob.pdfIn PDF document text
    • https://bugagage.weebly.com/uploads/1/3/5/3/135330359/2ee01de523030.pdfIn PDF document text
    • https://besixovit.weebly.com/uploads/1/3/5/9/135997460/xikenivev-lidoto.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381971/normal_605ad0c9e37b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470830/normal_603d3253da170.pdfIn PDF document text
    • https://zeleveruki.weebly.com/uploads/1/3/4/8/134898901/4225833.pdfIn PDF document text
    • https://ramakizuwag.weebly.com/uploads/1/3/4/3/134321509/purediruvizajolalew.pdfIn PDF document text
    • https://sadavixiji.weebly.com/uploads/1/3/5/3/135333995/paruxipililad_lovade_kotepumiko.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465149/normal_6002a7367f20a.pdfIn PDF document text
    • https://romarifekaxa.weebly.com/uploads/1/3/2/6/132683260/99669.pdfIn PDF document text
    • https://pikisavejalanab.weebly.com/uploads/1/3/3/9/133986241/labunokibebexomabo.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/fce743de-1387-4932-a770-133b43b4cb0d/22058769421.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/588e0f61-f565-4f2b-9e1e-a9a053f1e619/jugirenel.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_off0000f026.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF026 5636 bytes
SHA-256: d3901f9613647543f52d2ab293bc6f750c91be6d2dddeca91142a14555d10ab5
font_01_sfnt_off0001033f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1033F 12236 bytes
SHA-256: 05e0845e0f26a689860925b3892d458060be6a7fb5cf48cc852e6dc622d03296

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