Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b068420b8736cd2…

MALICIOUS

PDF

76.7 KB Created: 2020-08-07 07:31:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d5f733403523a2a18316b82582ba4c8d SHA-1: e8071c163153482ceb6356f8a0dd995f0cf6a62d SHA-256: 7b068420b8736cd2b09e77e2239b8fae7e5135a20913aa84324488255aa2635f
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to appear as legitimate PDF downloads, but they redirect to a malicious domain. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically identifies the primary redirector URL as malicious. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the malicious URL, suggesting a phishing or scam attempt.

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=abdominal+perineal+resection+pdf In PDF document text
    • http://letuto.sneakpeekproductions.com/uploads/1/3/1/8/131856380/bafonexeweru.pdfIn PDF document text
    • http://files.loveandmascara.com/uploads/1/3/1/6/131637529/doguloxim_sogedosazev_miwumudukuj_zedikibu.pdfIn PDF document text
    • http://files.capturingculture-reighanfisher.com/uploads/1/3/1/6/131606789/db242.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/1/0432/0215/0557/files/jewibanolaredomalojepovim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3123/2674/files/enterprise_architecture_styles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7337/1300/files/64032430718.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7391/2488/files/kupesoxumozobopifivodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9388/5089/files/xuguse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3462/4679/files/86427233119.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6982/3390/files/37885983396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/peposorutap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5395/5742/files/mugofolavawan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/modal_verbs_advanced_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8264/5665/files/buwimutepigezawapofokalib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7182/2229/files/tevasexatijolitazu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9651/4461/files/rowikekixaxuzujovudenuwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/94158543148.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_off0000bb2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB2A 14764 bytes
SHA-256: fb57379ecc63d46c05b9985067e544321dab6487be686f427533ec794a037d38
font_01_sfnt_off0000eaac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAAC 5432 bytes
SHA-256: 29dd3516e49563475308474bb73572a5f9e94b8aa532a11b88daff3a7aa662e5
font_02_sfnt_off0000fd02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD02 12380 bytes
SHA-256: 9b5a95015a9d596552d4520700959da01baed6e9bf59011772eba227e3cd4538