Malicious PDF — malware analysis report

Static analysis result for SHA-256 01efcc0f4be8a6d2…

MALICIOUS

PDF

62.3 KB Created: 2020-08-18 17:58:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2f51dda3a8c0d3f8bfba98351df0975b SHA-1: 52e502dd63e01dbc4f280f97bf7b33e7d039bda0 SHA-256: 01efcc0f4be8a6d2415bebb6cc72ef867c1fa588cd8a377a7648eb6b65ec6d51
202 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.ru/pify?keyword=arunachal+university+of+studies+fee+structure+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to disguise malicious content as a fee structure. The presence of a large number of external PDF links further indicates a link farm or SEO manipulation tactic to distribute 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=arunachal+university+of+studies+fee+structure+pdf In PDF document text
    • http://wibif.thelittletreatmentroom.ca/uploads/1/3/0/8/130814328/acfb9.pdfIn PDF document text
    • http://files.ekoforteang.net/uploads/1/3/1/3/131379117/aa3f77.pdfIn PDF document text
    • http://files.brownbrotherscruises.com/uploads/1/3/1/3/131380120/7087168.pdfIn PDF document text
    • http://zusudis.shrubmadness.com/uploads/1/3/2/7/132740285/lanorebaw-visiton.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0802/2938/files/bezojevopelo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5647/1959/files/47153614190.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/6518/9019/files/ruvonabirole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/kusixinir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/michelman_violin_varnish.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9969/2958/files/45476016863.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8947/7273/files/military_alphabet_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9725/8136/files/16940130669.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6593/3985/files/lisiwasefuwemidadur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1206/2364/files/63417025428.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5969/8077/files/calculus_b_v_ramana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2230/0822/files/viwim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8790/4411/files/21278866693.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008493.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8493 5276 bytes
SHA-256: b22df8ff28785fbff11617b798c6dd818180078ee71127b41afd7005ee94074a
font_01_sfnt_off00009680.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9680 16252 bytes
SHA-256: 1424133b5ed05aca7ca42149fe68d0684805604dd2cb3ca551737c0cb0e49723
font_02_sfnt_off0000c7ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7FF 16164 bytes
SHA-256: ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8
font_03_sfnt_off0000dd18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD18 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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