Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5cd275fe6c70e82…

MALICIOUS

PDF

47.7 KB Created: 2020-08-06 13:41:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8c75b3dad94a7131d74964cfabf8ca23 SHA-1: 8c6097647bd7ba3de267bd1aac074ba1bcc65f68 SHA-256: e5cd275fe6c70e82b37c48f3970ae1e4d1bd5ca43db8139216344eaa6883c056
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, masquerading as a technical document, to a redirector hosted at ttraff.com. This indicates a link farm or SEO poisoning attack designed to drive traffic to malicious infrastructure. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to further stages of an attack.

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=types+of+deep+foundation+in+civil+engineering+pdf In PDF document text
    • http://files.aroundbend.com/uploads/1/3/1/4/131437380/sufikuwonagorijula.pdfIn PDF document text
    • http://medov.wildflowerartist.com/uploads/1/3/1/8/131857445/jepewufoka.pdfIn PDF document text
    • http://fasek.tnpost289.com/uploads/1/3/1/4/131406390/6601373.pdfIn PDF document text
    • http://files.professorsilverblank.com/uploads/1/3/1/0/131070366/4949526.pdfIn PDF document text
    • http://nanamejuj.acornequalityfund.org/uploads/1/3/1/0/131070493/74947.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/1/0439/3048/4904/files/kaplan_usmle_step_1_lecture_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3397/7255/files/bilivemivagib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1359/4526/files/misadijadosebedukufemalul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5488/1175/files/5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4389/8019/files/84700432679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8667/5109/files/lonely_planet_georgia_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5131/1513/files/posudipixalevezogujere.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4087/4408/files/57916716245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/4541/5070/files/brihaspativar_vrat_katha_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7329/7814/files/40647025813.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7153/6285/files/xinivuwoperevepeso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7658/2550/files/80417667834.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6727/7469/files/36964791427.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006efe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EFE 5316 bytes
SHA-256: 51bdb75dca1570a9393dc62100b184ff63210410cbd845ae094f2f14bba1a4a2
font_01_sfnt_off0000812a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x812A 9932 bytes
SHA-256: ed416330ecd12f4c3b4c85a0886979bb9f08c7aea87b366bc3780303f15db15d
font_02_sfnt_off0000a323.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA323 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71