Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa1462a01774b5d2…

MALICIOUS

PDF

45.2 KB Created: 2020-08-05 16:06:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 936dc57a258c017ef31514b47c8e1216 SHA-1: dabe32c48de041a89860c6f3ee854f9cc0684c1b SHA-256: aa1462a01774b5d2074bb3669c476f5df45a27a389f2a8fc60f9b7c33f29c89b
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm for SEO manipulation. One critical heuristic identified a link to a known malicious redirector, 'https://ttraff.ru/pify?keyword=everything+about+effective+communication+pdf+free+download', which is likely intended to lead the user to a malicious site. The document body contains garbled text but includes the same redirector URL and several Shopify URLs, reinforcing the link farm and redirection attack pattern.

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.ru/pify?keyword=everything+about+effective+communication+pdf+free+download In PDF document text
    • http://files.aloe4care.com/uploads/1/3/0/9/130969592/1091340.pdfIn PDF document text
    • http://jamedaluk.evolutionmeetings.org/uploads/1/3/1/0/131070722/9ad4719b427cb0.pdfIn PDF document text
    • http://dabis.chrisruston.com/uploads/1/3/1/3/131384284/9322538.pdfIn PDF document text
    • http://files.egatecoc.org/uploads/1/3/2/6/132695392/rikuno-kuzoko-dafewadogiwit-tikojeke.pdfIn PDF document text
    • http://files.kensettia.com/uploads/1/3/1/4/131437680/kokibipunakuko-paziluf-gepekupamimabup-tadodukudixod.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/1/0429/5376/9123/files/astm_a351_cf3m.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3889/1419/files/36683000029.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4062/8133/files/16235922513.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1567/5815/files/ichirin_no_hanna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3532/0742/files/synonym_for_savior.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2661/2378/files/critical_reading_and_writing_skills.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1322/6139/files/51070068441.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5692/9687/files/faxizesetejobomega.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0593/4757/files/lulozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8924/7894/files/99565535272.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8120/3861/files/81679662773.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_off000069b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69B3 5744 bytes
SHA-256: a3195e01fddf06da37a8bdd921d6eb3f0b7e28caf47b92a2064d21fd67a67d88
font_01_sfnt_off00007d34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D34 13412 bytes
SHA-256: 1335569a8c29a92d029b4ad3f0db7041643531fcf55328e9cfa3347863951011