Malicious PDF — malware analysis report

Static analysis result for SHA-256 01c04826933329b1…

MALICIOUS

PDF

40.9 KB Created: 2020-08-12 13:33:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 26a25cf590c505438dca7889352f1518 SHA-1: 31b196a43263084c4324b2efbf5ed11b9d26b83e SHA-256: 01c04826933329b10f640526562fcf8c3df982cd34b9b0136774e277cc007ec9
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at 'https://ttraff.cc/wb?keyword=crybaby%20wah%20535q%20manual'. This redirector likely serves as a gateway to a phishing page or malware download. The presence of many links to PDF files on Shopify domains suggests an attempt to create a link farm for SEO manipulation, potentially to obscure the malicious redirector. 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/wb?keyword=crybaby%20wah%20535q%20manual In PDF document text
    • http://zedif.nepalschoolprojects.ca/uploads/1/3/1/4/131453247/nojopim.pdfIn PDF document text
    • http://files.ranchatwest40.com/uploads/1/3/0/8/130813906/9062179.pdfIn PDF document text
    • http://files.apafss.org/uploads/1/3/1/3/131378821/9993804.pdfIn PDF document text
    • http://jusus.kaylynmariedunn.com/uploads/1/3/1/8/131871390/zamuwibov.pdfIn PDF document text
    • http://files.nigelbrownjadecarver.com/uploads/1/3/1/4/131437724/lerepumumuseko-nisuxol-madawazugan.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/38746106010.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7744/1438/files/carnatic_music_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8249/8716/files/gokuzokawedixevo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8207/2739/files/60763024307.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3946/4341/files/tipim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0100/4707/files/tokitanutisexad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6033/9623/files/46799808910.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1761/7057/files/zuwufevewixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8036/5733/files/ramadan_calendar_2020_durban.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8627/4967/files/kadukolopudix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8814/9654/files/83674858863.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7049/6661/files/passive_all_tenses_worksheet.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005490.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5490 5044 bytes
SHA-256: 2c6d9846c3b35732582bb136a891af3184c79ca9763e9c62f20cfd726a0a8c86
font_01_sfnt_off0000659c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x659C 10200 bytes
SHA-256: ca3ee53130485169c0ccfa8b451481f0a93c39e92e5c533dabbbe328b0f3f2ac
font_02_sfnt_off0000889b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x889B 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e