Malicious PDF — malware analysis report

Static analysis result for SHA-256 23949496d9338b98…

MALICIOUS

PDF

54.6 KB Created: 2020-08-21 00:45:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9010e9d807fea3f44e14554abe853108 SHA-1: 78af0512604ac5d06d289147d45bc13336f8e7c9 SHA-256: 23949496d9338b9817468fe99cf5eed006174524d911179b0345742af1a67f1d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass of external links, many pointing to benign Shopify domains, but one critical link to 'ttraff.ru' is identified as a malicious redirector. The document body, though heavily obfuscated, contains the same malicious URL, suggesting the primary intent is to lure the user to this redirector. The PDF structure and link farm indicate a likely attempt at SEO poisoning or a phishing lure disguised as a form.

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=fda+philippines+joint+affidavit+of+undertaking+form In PDF document text
    • http://files.goodnews4kids.com/uploads/1/3/1/3/131381675/bivepusi-vavatimu-sotogegarixije-melatovawopasim.pdfIn PDF document text
    • http://files.azcatalyst.org/uploads/1/3/0/7/130738562/8890963.pdfIn PDF document text
    • http://karedik.resilientpeople.ca/uploads/1/3/1/4/131454215/fafab.pdfIn PDF document text
    • http://files.whspta.com/uploads/1/3/2/6/132682134/491971e36.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/1/0440/2852/6742/files/akc_conformation_event_calendar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4903/1592/files/nouns_pronouns_adjectives_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/0634/4606/files/faler.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3728/5797/files/376979576.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1839/4527/files/light_feather_classic_wow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/duzedekilotedizuvoze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1335/6189/files/honda_manual_transmission_fluid_equivalent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3165/7638/files/susuga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0349/3022/files/tratamento_para_cancer_de_colo_de_utero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9056/6556/files/unity_fade_out_object.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008d0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D0D 2828 bytes
SHA-256: a17885b4fd577e0298a64705d5055d2ac7c2363fd7008e9cf236b3df412a17d8
font_01_sfnt_off00009707.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9707 5608 bytes
SHA-256: ca97f0de1096178b136e9d018390c207ed40865215c3d4cba8bf8e2148435f10
font_02_sfnt_off0000aa04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA04 10120 bytes
SHA-256: 1cc8ba01e326b5217e2513cab203ce58c98dec8f43c33762fc595407c77d42c8

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