Malicious PDF — malware analysis report

Static analysis result for SHA-256 72981118cd1b1196…

MALICIOUS

PDF

44.6 KB Created: 2020-08-09 10:17:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7360fa826a980b2cd916de53de484b49 SHA-1: 44d626e8e85389baf198fd07c0091fdd2480289e SHA-256: 72981118cd1b11969a7798e931c0ba8ea31aecabfed55e775c5538b5f9023081
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous links to external resources, many of which are hosted on Shopify and appear to be part of a link farm designed to attract search engine traffic. The primary redirector URL, https://ttraff.cc/pify?keyword=act+bubble+sheet+pdf, is flagged as malicious and is used to obscure the ultimate destination of the download lure. The ML classifier also strongly indicated maliciousness.

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=act+bubble+sheet+pdf In PDF document text
    • http://files.wrestlingdoneright.com/uploads/1/3/2/8/132814168/mazowixipiz-rafile.pdfIn PDF document text
    • http://files.firstathens.org/uploads/1/3/2/7/132710687/9347935.pdfIn PDF document text
    • http://files.michelleclarkvm.co.uk/uploads/1/3/0/9/130969313/80d6db4dae0.pdfIn PDF document text
    • http://files.iljadecoster.be/uploads/1/3/1/4/131406739/sunali.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/1/0430/7809/0901/files/hp_laserjet_3050_driver.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0673/0144/files/42329725782.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6539/2804/files/dadalikotumiwitajawolimog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0867/1394/files/77589687923.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6123/2294/files/7825667371.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9016/5403/files/luvoto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8001/5262/files/xinuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/zuzefefixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6821/9799/files/no_world_break.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1766/5701/files/jurnal_acetobacter_xylinum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6200/1821/files/18146207201.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_off00007037.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7037 5068 bytes
SHA-256: 138053731eb8af5da06bafa6501396fd5db3d99dfbcf9d59df1d9b70c1e9463a
font_01_sfnt_off00008176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8176 10576 bytes
SHA-256: ec3a481800f5e781c406be38dc6f5b110304b3af625ef97fc890eb5a18e03c28

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