Malicious PDF — malware analysis report

Static analysis result for SHA-256 83f77bd88beba6eb…

MALICIOUS

PDF

46.7 KB Created: 2020-08-24 12:47:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 072f4827736a0f202a14a9b67ffb91fa SHA-1: c04d6a87b37159f2a32f8a8eeeaa80e15e00baad SHA-256: 83f77bd88beba6ebb678a73b0b67a0c2afaf5f9311488b2df43431eb3761c6d8
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.com) known for malicious activity. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'browserling.com whatsapp in jio phone', suggesting a phishing or scam attempt. The presence of a link farm and a malicious redirector indicates an attempt to drive traffic to potentially harmful sites.

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.com/pify?keyword=browserling.+com+whatsapp++in+jio+phone In PDF document text
    • http://files.originalsexyslave.com/uploads/1/3/0/9/130969004/ca2abe.pdfIn PDF document text
    • http://kobob.cooksontributeb29.com/uploads/1/3/1/3/131398272/kogifaxota.pdfIn PDF document text
    • http://files.kennedypickering.com/uploads/1/3/0/7/130776206/3524856.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/1/0437/6346/6391/files/boxosewepenawasuvupirek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/bibowitegojajaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8522/5372/files/murakigodalu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9004/3285/files/ruzasotevuruvivoxojife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7358/4793/files/90584258566.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5832/1821/files/lukorusigap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2759/3376/files/dart_tutorial_point.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0814/8127/files/58917892257.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1764/9819/files/ruduzaxuxasogex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7142/9016/files/panalaxosoziwinetufuf.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_off000076e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76E1 5596 bytes
SHA-256: e687c2a3b48f3ec3c294ea8f94d31905e9d7b8caf93b377537fb1acef0cc384b
font_01_sfnt_off000089d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89D4 10612 bytes
SHA-256: 4ebc206d9582852a42ea1144c965a763b4e999a457d5bb5478e651de30929019

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