Malicious PDF — malware analysis report

Static analysis result for SHA-256 56327567d13f43a5…

MALICIOUS

PDF

75.6 KB Created: 2021-01-08 11:39:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 22f6688c45c4873789c79d2dfb75fbf6 SHA-1: 7006973955e62e61e5f6c1959ff35e76d8910207 SHA-256: 56327567d13f43a5119c5364a496693edbc702012779d21c85f8ad59f858024e
222 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious intent, including links to known malicious redirectors and a link farm designed for SEO manipulation. The ML classifier also strongly flagged this PDF as malicious. The presence of embedded URLs and a 'download button' lure suggests the document is designed to trick users into navigating to external sites, likely to download further malware or engage in phishing. No scripts were extracted, but the overall structure points to a malicious document.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffine.ru/123?utm_term=cpt+scanner+2017+pdf+free+download In PDF document text
    • https://cdn.sqhk.co/libegavezu/Xl1LLhf/zuginupoguvakepolugekok.pdfIn PDF document text
    • https://cdn.sqhk.co/butiluluvuk/3hjgjqU/chex_quest_wad_zdoom.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365545/normal_5fce24f4d4a71.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444366/normal_5ff802018859c.pdfIn PDF document text
    • https://nukubutoti.weebly.com/uploads/1/3/2/3/132302768/dukulix.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/gupojakami/bafezagivox.pdfIn PDF document text
    • https://s3.amazonaws.com/kitakilesa/vazobobukuguditasomafip.pdfIn PDF document text
    • https://s3.amazonaws.com/gixawetopoli/ziruz.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/79940886910.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffeb55d7-9e60-4258-92bf-1a0967680bfd/the_outsiders_free.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_off0000dd30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD30 5552 bytes
SHA-256: a288229e2f6813fed902010d493715c8c896a21b8ce07a3064c4c641f2801bc5
font_01_sfnt_off0000f03b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF03B 11412 bytes
SHA-256: 2c24caa5a302250ff6f86906ec19d6ca42b0e1f2458c7cf7942acf10480e00e1
font_02_sfnt_off000115c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115C1 2472 bytes
SHA-256: 3dbd22823881ddaefef75846029baeb95eb6272647fa3ad460fb8e53914d6255

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