Malicious PDF — malware analysis report

Static analysis result for SHA-256 a009da0430ba18ad…

MALICIOUS

PDF

87.2 KB Created: 2020-08-05 11:10:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 56947a8a7638cd489f5d0a681174743e SHA-1: a6dae01f74123fdd6c711aaa3f882e2e755569a1 SHA-256: a009da0430ba18ad2f7b39b3b8d59688da8fe9b3b522b503e5c352841524c443
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.com/pify?keyword=aprender+hablar+japones+basico+pdf', points to a known malicious redirector. The document body, though heavily obfuscated, contains this same URL, suggesting it is the primary lure. The presence of a link farm indicates an attempt to distribute malicious content or conduct phishing operations.

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.com/pify?keyword=aprender+hablar+japones+basico+pdf In PDF document text
    • http://files.joyfulnoiseguitarcentral.com/uploads/1/3/1/3/131379692/5843591.pdfIn PDF document text
    • http://files.pa4sc.com/uploads/1/3/1/4/131406736/637ce496897c7f.pdfIn PDF document text
    • http://files.koasportscoaching.com/uploads/1/3/2/8/132816165/dokafan_zuvijorabig_mawurivelolun.pdfIn PDF document text
    • http://logul.torahanimalworld.com/uploads/1/3/0/7/130776760/88e5cd42c.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/1/0434/5249/8070/files/16502284895.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0010/3071/files/dozafiro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30899714004.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1279/2221/files/14162286987.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/judegesuzopo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9213/0458/files/xojil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1851/7665/files/rapigegosilugusisal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8026/9462/files/99956285032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8039/9513/files/140783144.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0265/0014/files/rirulosifetamebiga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4155/3575/files/89364655305.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5757/8137/files/42268348700.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5011/4967/files/pakopigosegirodedewe.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
stream_004_off0000b00b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xB00B 28568 bytes
SHA-256: c22a0daf5e519bcfab6a2783423e41597a2f3e62927d584c5ee3861166463947
font_01_sfnt_off0001083e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1083E 5448 bytes
SHA-256: 76f8ce1159ce4806612db3d444c162956709faf3d0d4c023fe8a655e6d320c33
font_02_sfnt_off00011ac0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AC0 17460 bytes
SHA-256: 94a56640c74e054f9a950a181751773dc69ce96c408c4d20b817b75f2f075111