Malicious PDF — malware analysis report

Static analysis result for SHA-256 1943655a5f4afda4…

MALICIOUS

PDF

137.8 KB Created: 2020-08-10 06:31:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 88dc47bc1da9931e3d0373d42d5cfc74 SHA-1: 8d82064a77eb5ee5ea7de43887bf7cc3d2e14290 SHA-256: 1943655a5f4afda48a4be3b1923ae6d775e3cdcd1beb83a99c158c79f3b51256
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, suggesting a phishing or scam attempt. The embedded URL `https://ttraff.com/pify?keyword=seismic+stratigraphy+and+depositional+facies+models+pdf` is a known malicious redirector, likely leading to a payload or further phishing content. The document body, though heavily obfuscated, contains this same URL, reinforcing its malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.com/pify?keyword=seismic+stratigraphy+and+depositional+facies+models+pdf In PDF document text
    • http://wunibami.digcitinstitute.com/uploads/1/3/2/6/132683188/zagudinipusapup_jesaji_tutitobozini_munovusi.pdfIn PDF document text
    • http://files.bustemupoutfitters.com/uploads/1/3/1/3/131380482/gilolegomipoz.pdfIn PDF document text
    • http://mugadej.andale-eco.com/uploads/1/3/1/4/131453060/a9cbde3494b36.pdfIn PDF document text
    • http://files.grundmeyerleadersearch.com/uploads/1/3/1/6/131636990/sifixoj_jutixepipi_bevasagipaxuja_sivosukisozi.pdfIn PDF document text
    • http://files.neo-terra.org/uploads/1/3/1/6/131637546/5904605.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/1/0428/2567/9015/files/romijikesakolumavu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7580/6119/files/46703956319.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4233/9992/files/84931339180.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2729/0518/files/esl_adverbial_clauses_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0880/2466/files/81262978014.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7950/7880/files/xawofolivurudoremotubi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3355/7149/files/conjuntivitis_bacteriana_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6651/3818/files/midok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0428/7383/files/4442475121.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0706/5757/files/allegany_state_park_map.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_off0001e05a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E05A 5776 bytes
SHA-256: aedfd573534377abf4df00ae73dfc920522a07076eeda0fd545042ed55672bcf
font_01_sfnt_off0001f3e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F3E4 11300 bytes
SHA-256: f13b8087146a2c6eb270532af3256c6a00f264e828388050e43883a50104f197

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