Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab9ff3e7f7c2931e…

MALICIOUS

PDF

39.8 KB Created: 2020-08-24 02:20:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 630e0b79642da169a8c95e151b4b61a7 SHA-1: 9a2c4e76832818057e986888f87db29759393054 SHA-256: ab9ff3e7f7c2931eb14af2be86f605e6fbd30c7bc47295a4023a127fbe643aee
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be a lure for an 'invitation template for corporate event'. This URL redirects to a malicious domain. The file also contains a large number of embedded links, many pointing to Shopify, which is characteristic of SEO link farm abuse to obscure the true malicious destination.

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.cc/pify?keyword=invitation+template+for+corporate+event In PDF document text
    • http://files.pa-di.dk/uploads/1/3/1/4/131407135/6371781.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/1/0438/3434/3574/files/3958844582.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9344/2208/files/55787259218.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/71482320097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7320/0537/files/terapi_ameloblastoma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5856/9115/files/42075536119.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4690/3701/files/44172827303.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/3042/6278/files/first_continental_congress_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8216/1053/files/pixel_gun_3d_hack_2016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mazimuzoxoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8524/1256/files/kogogotelebilavagivojaga.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_off00005ece.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ECE 4980 bytes
SHA-256: 4415642dc39c583fd465db640c48a4b049951b13cc5cc81c6483086a7b455af6
font_01_sfnt_off00006fab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FAB 10060 bytes
SHA-256: 9e253081e673ee0501e96315790da2f10a15f9596adc497d26c54d6baeb28015

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