Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d44ff63631e7c2a…

MALICIOUS

PDF

37.7 KB Created: 2020-10-13 11:33:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 19dc07aef8d2a85e7560b033fc5240a2 SHA-1: de0e7b61e333e226d38d82c206d4c3528e4c7fc4 SHA-256: 4d44ff63631e7c2a76ab29b6eff66d033ecdb7a7f886975f9ac765acde261ab6
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • 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
  • 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://cctraff.ru/strik?keyword=whatsapp+online+tracker+apk+free+download In PDF document text
    • https://site-1042677.mozfiles.com/files/1042677/25652674325.pdfIn PDF document text
    • https://site-1038312.mozfiles.com/files/1038312/tutibonojalimerexi.pdfIn PDF document text
    • https://site-1038497.mozfiles.com/files/1038497/nitisopefes.pdfIn PDF document text
    • https://site-1048471.mozfiles.com/files/1048471/67843250634.pdfIn PDF document text
    • https://site-1048190.mozfiles.com/files/1048190/86121960589.pdfIn PDF document text
    • https://site-1042887.mozfiles.com/files/1042887/vagopojuzap.pdfIn PDF document text
    • https://site-1036692.mozfiles.com/files/1036692/65725163295.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/40ddfa4d7f4e3e.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/xewuj.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/baputedev.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/kedoxezezaj-temolej-zunemalavorun-mutelokowomimi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9723/6650/files/79824837392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/2451/5989/files/7493755617.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/6290/6017/files/83649592588.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000528a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x528A 5412 bytes
SHA-256: 8281762692b07a7be3bc33ce424ab6ae881b6256d5686c3c4c7e59640ea712c1
font_01_sfnt_off000064fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64FD 10792 bytes
SHA-256: 68f31f981c32305e51be827121ea8171c8f5f9dbd2944b84a60220d8842e097a

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