Malicious PDF — malware analysis report

Static analysis result for SHA-256 890132d4b5314ea5…

MALICIOUS

PDF

67.3 KB Created: 2020-08-12 06:41:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bafe0e0461ba12bea6a142e2d63c290b SHA-1: 882e261bf6f94e6c70107719fa3bf1483141fadc SHA-256: 890132d4b5314ea5fd958fa3360931127eaf3eb5d93e5c2f300ff807f4550fc0
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=skewness+calculation+pdf'. This suggests the document is part of a link farm or phishing campaign designed to redirect users to malicious sites. No scripts were extracted, but the presence of embedded URLs and the ML classifier's high confidence indicate malicious intent.

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.com/pify?keyword=skewness+calculation+pdf In PDF document text
    • http://gasizuk.evanswood.org/uploads/1/3/2/6/132680813/meriwulabemomafog.pdfIn PDF document text
    • http://melane.falsefloorcreative.com/uploads/1/3/2/8/132814930/puzuwesi.pdfIn PDF document text
    • http://files.pcqc.org/uploads/1/3/1/4/131452842/6263829.pdfIn PDF document text
    • http://files.milehighaussies.com/uploads/1/3/1/0/131070611/mazakeb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2534/0328/files/kogakofopugolula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1381/6995/files/88340709499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0749/8647/files/xomojuwuvug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2032/8853/files/nubebizeboxamutar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4155/3575/files/53847398947.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7195/5351/files/tigimibijit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9164/7894/files/ocr_a_level_chemistry_textbook_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0609/8597/files/ramuvanefonajokamozudu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5850/3573/files/gexavewetesaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/figarawevig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46676539889.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4227/5485/files/33370327755.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/0787/2921/files/panasonic_phone_manual_kx-_tgea20.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000096b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96B2 5196 bytes
SHA-256: 6fd4c3c7aa2a7d7e1e59565c0406cbc1c772ce5301145645cb323105dd9fdece
font_01_sfnt_off0000a87e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA87E 16656 bytes
SHA-256: c59cf5fad4f262b33b9756816600526e6eb8706405c30c159f0629b33ff30036
font_02_sfnt_off0000dd06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD06 16064 bytes
SHA-256: 1396562ca3b520584892f4bd50ff39b0722e014cdbc1625119a677b71e1270af
font_03_sfnt_off0000f1aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1AA 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2