Malicious PDF — malware analysis report

Static analysis result for SHA-256 8130f731f2d1fb8c…

MALICIOUS

PDF

44.0 KB Created: 2020-08-12 17:24:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 18b2ece62ac21f6454fc98bf8a6172ab SHA-1: aee46a7e29873c065c5c2dadef3a84579638e676 SHA-256: 8130f731f2d1fb8cbbfcabbea5b2165c2a8e6d093b52a145d577b960d4058843
194 Risk Score

Malware Insights

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

The PDF document contains a lure related to converting PDF to Word, directing users to a malicious redirector. This is further supported by heuristics indicating a link farm and a malicious redirector. The embedded URLs, particularly the one leading to `ttraff.cc`, are indicative of a phishing or scam attempt designed to lead users to potentially harmful content.

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.cc/pify?keyword=android+app+to+convert+pdf+to+word+document In PDF document text
    • http://files.sweetretreatsscrapbooking.com/uploads/1/3/1/4/131437949/44c25.pdfIn PDF document text
    • http://files.pterodactylaerospace.com/uploads/1/3/0/8/130874254/89abfd0f22c62d.pdfIn PDF document text
    • http://pafizoju.itsbammtastic.com/uploads/1/3/2/6/132695584/fozilerodajenatozu.pdfIn PDF document text
    • http://files.sirkil.com/uploads/1/3/1/4/131454034/9ba47808dc3f3a.pdfIn PDF document text
    • http://files.infusionwa.com/uploads/1/3/1/4/131407164/bibizezesipolag.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/1/0438/6488/3355/files/cinderella_2020_movie_script.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3892/4181/files/88966721056.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5891/3689/files/50747772401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2469/4942/files/82452214530.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1238/2117/files/83798871824.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0997/4169/files/xepebilonuzuzuxolasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1085/0979/files/40562377218.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3822/6085/files/sims_4_repack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5735/6710/files/xotadapoxeruvavadeneroko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8812/4829/files/incident_at_absalom_station.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4560/0931/files/78634256693.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 8

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_off00006ded.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DED 5232 bytes
SHA-256: 7ffbc4487b9ab0e8c8284eb74bd3bb95f3f0912788b0616810874a440de0a4b0
font_01_sfnt_off00007fb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FB9 10180 bytes
SHA-256: 5c319b232554c58c94f3b02fbc3e70395c039089ddc72365283d81e57b5742bb

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