Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1fb6cca87405bec…

MALICIOUS

PDF

37.5 KB Created: 2020-08-16 16:11:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a17f0399ccb796af0e8761c7613eaac6 SHA-1: 6a7515118cfb5cd798c27b6f030c6e4cb645b611 SHA-256: f1fb6cca87405bec7d280426c0014c3914bd4dd9afbbb518670f9a39b1429f5f
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged for containing a malicious redirector link and a large number of external PDF links, suggesting a link farm or SEO abuse tactic. The presence of a visible command execution instruction indicates potential for further malicious activity. The primary malicious URL identified is https://ttraff.ru/pify?keyword=cameraman+ganga+tho+rambabu+songs++320kbps, which is known to host malicious content.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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://ttraff.ru/pify?keyword=cameraman+ganga+tho+rambabu+songs++320kbps In PDF document text
    • http://tazefa.aliceleon.com/uploads/1/3/1/4/131453416/dexuj.pdfIn PDF document text
    • http://files.sydneynewhorizons.org/uploads/1/3/2/7/132710787/lozaratorepu_tatira.pdfIn PDF document text
    • http://files.remotecmd.com/uploads/1/3/0/8/130813427/tezovamozoz_vokejavusit_wesapexuvoguxev_rijuvuras.pdfIn PDF document text
    • http://files.wycliffelutterworthu3a.org/uploads/1/3/0/7/130738652/b7bd23746.pdfIn macro / runtime command snippet
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1897/6414/files/b._sc_mathematics_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6006/7480/files/67278893811.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5814/2120/files/34557512245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3755/files/81200213361.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6470/4662/files/24187300125.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8600/2838/files/disijujulevunavulivu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3095/3627/files/mollifies_crossword_clue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2023/7475/files/xobugosori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8969/0773/files/advanced_transport_phenomena_ramachandran.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/7899/6383/files/5034885680.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_off00005395.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5395 5748 bytes
SHA-256: 0d2091ad30f6ea95a788dff627ce949628dfba60c36cf425f73310fecef643fb
font_01_sfnt_off000066f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66F0 9980 bytes
SHA-256: ec475a0653a73f03293716bc48739547aee62e220e30b946517d2bf6880cbe34