Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a6eb7a6a49d61a7…

MALICIOUS

PDF

31.7 KB Created: 2020-08-18 21:06:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4454a51db4888548a0f3353b26662466 SHA-1: 60271add65d77f3333c31f9d7b7a26c88127d68d SHA-256: 3a6eb7a6a49d61a740eb3f0d3332790eb8e64dc028a583b851c017c3e57bd121
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=free+celebration+background+image'. This link is presented within the document body, disguised as a free background image download, which is a common social engineering tactic. The file also contains a large number of external PDF links, many hosted on shopify.com, suggesting a link farm or SEO poisoning attempt. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

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=free+celebration+background+image In PDF document text
    • http://files.laurencedeadionneart.com/uploads/1/3/1/4/131407698/9207073.pdfIn PDF document text
    • http://files.frhistory.com/uploads/1/3/0/7/130775242/203b3fdac6dc1c0.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/1/0447/1940/7257/files/windows_server_2008_keys.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/66923604261.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2013/2257/files/libetipozokosukimul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9297/4499/files/46285198313.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7162/5621/files/animation_character_design_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8370/1151/files/razikizijakelejilukeditij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8156/3286/files/18234625469.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2568/6951/files/rinebubalaberutop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5298/2684/files/84854254645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/9141/5460/files/the_strength_training_anatomy_workout_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9703/0817/files/45265869043.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2358/0830/files/wawurumevebetozipus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0790/9794/files/36487380077.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2945/5263/files/podcast_script_template.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 6

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_off000042e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42E1 5240 bytes
SHA-256: 1358544644b9fed6d2d2517fa6e5dd7defd86445a29461659042fb13dc879c13
font_01_sfnt_off00005498.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5498 8632 bytes
SHA-256: 6b625ca4da261ca5c29eb4e0e9e77f4e6f7e3bae712e2593b6c1525290b97717

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