Malicious PDF — malware analysis report

Static analysis result for SHA-256 a86edf1de67f8ce8…

MALICIOUS

PDF

36.4 KB Created: 2020-08-22 18:12:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4b4d8edfb1dbfd710f370a273dd9690b SHA-1: 77cd93aacf56414d639e6719823363663005b3c4 SHA-256: a86edf1de67f8ce83d7409c795b6ed5e12e45a469eefeeb2529cbd4a662956b5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, which points to 'https://ttraff.ru/pify?keyword=lagu+cinta+luar+biasa+dj+andmesh'. This URL is likely used to redirect users to a malicious site. The document body, though heavily obfuscated, contains the same URL and references to song titles, suggesting a lure. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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=lagu+cinta+luar+biasa+dj+andmesh In PDF document text
    • http://files.leppekpottery.com/uploads/1/3/1/8/131857717/5546471.pdfIn PDF document text
    • http://files.screenvortex.com/uploads/1/3/0/8/130874612/3973525.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/1/0432/6785/0390/files/95054153490.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4173/4311/files/resistencia_a_antimicrobianos_veterinaria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5362/2182/files/reading_comprehension_kindergarten_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1463/5171/files/c_s_a_ka_full_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2103/1832/files/mavebuken.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9819/3573/files/analog_and_digital_modulation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2934/9030/files/bazaar_full_movie_300mb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4747/7667/files/vizuburujuwuvofujupari.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gujogu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6874/4099/files/pasalunodunesegikor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/56473724556.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1402/0505/files/99970622665.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 4

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_off000050e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50E3 5508 bytes
SHA-256: 06ece8ed8c804c5d981c335ca289954f1ef6a1e4ea374c217535fcee63c7ed3a
font_01_sfnt_off0000636a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x636A 9792 bytes
SHA-256: 4a96c11bcc1e9e63334f3197df9b5ef5b1b57a8578d510a12acbac24e10673e6

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