Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b1da9656e878822…

MALICIOUS

PDF

51.9 KB Created: 2020-08-12 14:11:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4dfa529e534e9829ccfc2a78a519e380 SHA-1: 3f7ff8666c553e924adc8088f42663c5122e3bd4 SHA-256: 7b1da9656e8788227e22dd93ee078327564e1100f956e05af5ec870510fc2cbd
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and appears to be a lure for a budget-related PDF. The presence of numerous other PDF links suggests an attempt to manipulate search engine results and hide the malicious redirector. No scripts were extracted, but the primary attack vector is the embedded malicious link.

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/wb?keyword=highlights%20of%20union%20budget%202019%20pdf In PDF document text
    • http://files.gccak.com/uploads/1/3/2/6/132695339/1533876.pdfIn PDF document text
    • http://fogibi.handsfeetandwings.candletothesun.com/uploads/1/3/2/6/132681464/wubusifak_bomivasixivid_wufureju.pdfIn PDF document text
    • http://files.gilaridgeceramics.com/uploads/1/3/0/8/130813428/nipolulo_ladera_webezerejuli.pdfIn PDF document text
    • http://files.sycamorebandandorchestra.com/uploads/1/3/1/0/131070289/d11c8936.pdfIn PDF document text
    • http://rirub.calconref.org/uploads/1/3/1/4/131454065/vamikuku.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/1/0435/1390/5311/files/mekawixamale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4076/7132/files/atoms_molecules_and_ions_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4143/8366/files/6615323438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2955/3575/files/bautagebuch_bg_bau.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7400/9753/files/english_speaking_skills.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2721/0144/files/biochemistry_mbbs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3546/7669/files/11081728646.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9877/6487/files/tesuxezuburatixezeto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1045/7753/files/rijisufoligakuzikovufewa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0088/8469/files/83116840759.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4683/8173/files/sanguine_temperament.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9911/1070/files/16599469007.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6958/8124/files/mamasudovurikipimog.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_off00007dc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DC2 5460 bytes
SHA-256: 795c7b28f9215a4e9e042d0c0b5e8fc3da6dd2d9fd33098f73a28afadd33392f
font_01_sfnt_off00009053.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9053 10648 bytes
SHA-256: b4a09a93825dbe52adf74a0da7725b8e2b66c25803b3507efdba2f849d85530e
font_02_sfnt_off0000b488.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB488 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333