Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ab1dcbeb76101e0…

MALICIOUS

PDF

46.9 KB Created: 2020-08-10 14:12:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5bfc81cb218fe6119c34d3d6c9d8982f SHA-1: eb7e51f8ec850791cca37ff481d85d63ee45f3fe SHA-256: 6ab1dcbeb76101e023dfdedc7165ddcbcb60210f4e491ddab0986bef45b913a5
202 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which are hosted on domains associated with SEO link farms and redirectors. The primary redirector URL is 'https://ttraff.ru/pify?keyword=application+of+derivatives+class+12+ncert+solutions+pdf', which is flagged as malicious. This suggests the document is part of a phishing or malware distribution scheme, using educational content as a lure to drive traffic to malicious infrastructure.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=application+of+derivatives+class+12+ncert+solutions+pdf In PDF document text
    • http://files.credit-hours.com/uploads/1/3/0/7/130739758/bed0b5a.pdfIn PDF document text
    • http://files.ericheerspinkceramics.com/uploads/1/3/0/8/130873822/5cd3b0c.pdfIn PDF document text
    • http://files.griffindean.com/uploads/1/3/0/8/130874019/nanaxu.pdfIn PDF document text
    • http://files.theinnovationcamp.com/uploads/1/3/1/4/131484603/6267351.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/1/0431/5555/4458/files/53959709111.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8897/5774/files/bezubujepitizakokamu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8416/9894/files/2744093338.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0749/2775/files/35682680741.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7731/2411/files/96670008310.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3057/6278/files/98484376499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/4077026649.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4962/1406/files/adhesion_testing_methods.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9345/1159/files/mesepoxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0594/9590/files/7335969833.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6265/6152/files/kiliv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5520/9879/files/vewefu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2172/9955/files/81005435299.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63DB 5380 bytes
SHA-256: 0eff1fa98a9c9672ef54b3632080d0e363df01d2dfd8f45f09b891868195327d
font_01_sfnt_off0000763b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x763B 9924 bytes
SHA-256: c05c5e6e2f2244b29bddb22443080260b9636a48db4db45000abd3f5ef897ee3
font_02_sfnt_off00009877.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9877 16144 bytes
SHA-256: f7f944af48a1f29a4fc81369acbb7667dc0c0bb312d09d0e658341ed730dbf86