Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0c058371a2fc4a1…

MALICIOUS

PDF

44.2 KB Created: 2020-07-31 20:26:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a4a7f8e2b73b2da7280d8fd1c523a17b SHA-1: 813e7370995daae6b0cfe322ad5f46b11d4d9e97 SHA-256: f0c058371a2fc4a1eed079a4aca960fd429e166517974a2a821b7501fea757c8
194 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The ML classifier also flagged this PDF with high confidence. The document body contains obfuscated text and the primary malicious URL, suggesting a lure for users to click through to potentially harmful 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=google+pony+express+games In PDF document text
    • http://files.joshuajfreeman.com/uploads/1/3/1/4/131438121/5340472.pdfIn PDF document text
    • http://files.dnrcustoms.com/uploads/1/3/1/3/131379894/rutus.pdfIn PDF document text
    • http://files.thebutterflyhaus.com/uploads/1/3/0/7/130738814/zuxinamejojeveweta.pdfIn PDF document text
    • http://files.methodtomymadridness.com/uploads/1/3/1/3/131383586/3433227.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/1/0436/4979/4213/files/zoligin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4901/5713/files/37730887812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7229/8913/files/zibolaliligowumobere.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5734/7749/files/2147148093.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/xagisidemuwiwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1327/5811/files/96730034575.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6300/0736/files/zaketukagaverubikofisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6627/8556/files/tagimukotim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4915/5740/files/fodadigajurojo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0892/5600/files/41015942416.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1357/0709/files/demadokogupi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4388/1114/files/34656306269.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D14 5340 bytes
SHA-256: ff3bcf7dbde6ab3cb6233ce300f28f71fee34412e69423968174393d4f6a2d9a
font_01_sfnt_off00007f3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F3D 10584 bytes
SHA-256: 3b3a723cb060721ea2d27f219c0cdbaaa5e6c081b35ee1756b88f23789dac2a8