Malicious PDF — malware analysis report

Static analysis result for SHA-256 136b78febd706bd1…

MALICIOUS

PDF

49.3 KB Created: 2020-08-15 00:44:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8b85a459a501753cbdd8cabc9c7a4bbc SHA-1: e0960c078135ad236e54b2b88e5b60574ca6239b SHA-256: 136b78febd706bd10b57d3402140a4871e714779cf4815b9c3e6f9555a2bd216
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) which is flagged as malicious. The document body and embedded links suggest a lure for downloading software, likely a phishing or malware distribution attempt. The presence of a link farm and redirector indicates an effort to obscure the true destination and potentially distribute malicious payloads.

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=anghami+plus+apk+3.+5 In PDF document text
    • http://xuruzilig.acuedge.net/uploads/1/3/0/8/130814758/da2c93b4748b13.pdfIn PDF document text
    • http://sopidogo.spirithorsekingsburg.org/uploads/1/3/1/8/131856158/juxerejafexuraf-rufibajesojo-bosidi-sotepagub.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/1/0428/4248/8998/files/fesulitatewepupiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1766/5701/files/jixamogupagisufedukasazit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0192/1184/files/86209789563.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5881/3333/files/zoruguvutadori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3695/8106/files/58617670148.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2021/4681/files/jipule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4059/5352/files/92478364681.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8570/2054/files/15819638416.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4955/7917/files/revozoserosupib.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 1

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006add.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ADD 5508 bytes
SHA-256: 471214b0c8449c2709ef5c0ca2f70947ea96da878e2926aac790fce56edb317c
font_01_sfnt_off00007d75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D75 11016 bytes
SHA-256: a6a66b5fecbcca965bce9273e619d6f2eaafc46312dda6280e47ebaa5167c8a2
font_02_sfnt_off0000a333.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA333 16300 bytes
SHA-256: 2264791c2630379540887006a2ca9615eb69f71f378a9318736486c0819f257b

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