Malicious PDF — malware analysis report

Static analysis result for SHA-256 071fa796ca56b7b2…

MALICIOUS

PDF

42.6 KB Created: 2020-08-12 06:44:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 280e3057dfb55270598f8335bdb98b59 SHA-1: 2bf5a4e6092a3c7beefa16ae73d4f6b8e12010db SHA-256: 071fa796ca56b7b260d82dbc2faa7b1a0f0ef9c25df6b62cd499b1f08dbd8f0f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to a redirector service identified as malicious. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector, suggesting a phishing or scam attempt to drive traffic to malicious infrastructure. The presence of a large number of external PDF links further indicates a link farm or SEO manipulation tactic.

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=article+review+format+pdf In PDF document text
    • http://files.nirvanatails.biz/uploads/1/3/1/3/131380042/2b9ae1e.pdfIn PDF document text
    • http://files.azusaconservatory.org/uploads/1/3/1/4/131437423/zexamexe_kalix_bogewetemavis_lomokatipawa.pdfIn PDF document text
    • http://files.princessinthemirror.net/uploads/1/3/1/4/131437948/wizasetibe.pdfIn PDF document text
    • http://files.jaccbuilders.com/uploads/1/3/1/3/131379012/xibodasapa.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/1/0431/2003/3943/files/autocad_plant_3d_2020_manual_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9946/4611/files/lajojakunarigiwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9802/1793/files/methods_of_waste_disposal_in_nigeria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4166/0826/files/duzuvivexezube.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3646/7619/files/movenetofabo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/16779250730.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4143/1464/files/51725344192.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9074/6271/files/l_aleph_borges.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5566/7605/files/phil_collins_against_all_odds_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0017/4504/files/vijolukamenuwovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1341/3791/files/kariwunijemutada.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 4

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_off0000696f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x696F 5264 bytes
SHA-256: ffb89f6f49d145d6e16a4abf65a72c7794cf2bc9716a9c7b2b35cac9b0a6efbf
font_01_sfnt_off00007b4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B4A 10240 bytes
SHA-256: 6f8b642bb6b6b7f92b76589a1bfda0190016c16d8f1e4b2a54353238d096c9d2

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