Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa08fef3f30c319d…

MALICIOUS

PDF

41.0 KB Created: 2020-08-08 05:56:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ffbe2a644d9b69c607e6b44ec20ab8e4 SHA-1: f0a4cfae299707e444349728e8f704d1d7f8ece4 SHA-256: aa08fef3f30c319d65632ab96eb4cb0c98c0c58c31609e9cafe275ba6e8f4637
194 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=difference+between+anode+and+cathode+pdf', which is flagged as malicious. The presence of a link farm suggests an attempt to distribute malicious content or engage in SEO poisoning. No scripts were extracted, but the primary attack vector appears to be social engineering via deceptive links.

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=difference+between+anode+and+cathode+pdf In PDF document text
    • http://files.dhbeautybar.com/uploads/1/3/1/3/131397971/ridafifog-fufifovetane-zuvidobeles.pdfIn PDF document text
    • http://files.visaofoundation.org/uploads/1/3/0/7/130740256/xederudimexobub.pdfIn PDF document text
    • http://files.sweetpsdecor.com/uploads/1/3/1/4/131410736/9d405314dd50e.pdfIn PDF document text
    • http://files.dreambigathletics.org/uploads/1/3/1/3/131398242/2b6964.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/1/0427/7580/6119/files/gedulukogos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0063/5290/files/nezapanokod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9456/5271/files/siwik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2689/8344/files/9441858489.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3170/8316/files/95185519669.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2511/0952/files/the_kabbalah_tree_of_life_ritual_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1701/1353/files/bangla_boi_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8052/3678/files/birumazopuwijin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7329/6789/files/psiphon_pro_handler_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9242/6405/files/que_es_el_embarazo_y_sus_etapas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9163/9968/files/satin_camisole_pattern.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7929/5383/files/retorolevedijine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4449/4760/files/asturias_tab_download.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 6

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_off000062e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E8 5264 bytes
SHA-256: 2c59ca5003c245e0b94310b637c4b9dc41c21b4609ff87b1cbb44463b8b2b36d
font_01_sfnt_off000074df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74DF 10036 bytes
SHA-256: b79a50c6a143338db78034ae96f2747721cd00f6589de0b7c51bce6f95a99175

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