Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f5873f4dca211b6…

MALICIOUS

PDF

38.5 KB Created: 2020-08-25 03:45:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d9d7c84366bf831d3c695acfe642d607 SHA-1: 4ba19f7dca0bb485bf91b6d83c244aa392b5f16b SHA-256: 8f5873f4dca211b6d0b8126d3a86837b2520105392893f35883b400a15f78457
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, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body itself appears to be a lure related to 'Destiny 2 steam achievements guide', suggesting a phishing or SEO poisoning attack. The ML classifier strongly supports the malicious verdict.

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=destiny+2+steam+achievements+guide In PDF document text
    • http://files.heartofthebronx.com/uploads/1/3/1/6/131606739/kopugixufelok.pdfIn PDF document text
    • http://files.jamie-hood.com/uploads/1/3/1/4/131453555/4b094696d3.pdfIn PDF document text
    • http://files.porterranchchiropractic.net/uploads/1/3/2/8/132814898/sukukuwusoposet.pdfIn PDF document text
    • http://fevatiw.crochetmaniac.com/uploads/1/3/1/3/131383651/tifobor_wejipovewubunut_pezekaporokisiz.pdfIn PDF document text
    • http://files.strawberrymoon.co.uk/uploads/1/3/0/8/130874197/muluxisowip.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/1/0433/2368/7067/files/63140152252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5563/5871/files/fuxepomivejoxebewesub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0019/1387/files/free_brain_games_apps_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9113/1557/files/27821024916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3772/0733/files/57348674400.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/1620/0863/files/64489128629.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9118/2243/files/vejolasemudamilib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7213/5074/files/58517444663.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7492/9308/files/79082320030.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_off0000575a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x575A 5520 bytes
SHA-256: 11d91c8b9220650649656d8970ffbc3197b41d639e6e9d323e9de76bf22e6077
font_01_sfnt_off00006a05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A05 10360 bytes
SHA-256: 94d8041085dc4d51fd510177fd077d33849a7bc8d843b8ced49583211b2a77d8

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