Malicious PDF — malware analysis report

Static analysis result for SHA-256 69d797fb1c64600d…

MALICIOUS

PDF

47.8 KB Created: 2020-08-06 10:47:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ad11af6d7aab9a26b17f6bd16a4064a SHA-1: cc580cbbc2aacd1426cfd1c94b193fd0d01a036a SHA-256: 69d797fb1c64600d5cfd40d00fefdf2a544b3aaf4ab12df2a986a595e40dec2d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm designed to mimic search results, directing users to a redirector URL that ultimately leads to other PDF files. The primary malicious link, 'https://ttraff.com/pify?keyword=mobile+applications+architecture+design+and+development+pdf+free+download', is identified as a malicious redirector. This suggests a phishing or scam attempt to distribute further malicious content or lead users to compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=mobile+applications+architecture+design+and+development+pdf+free+download
    • http://files.sdbda.org/uploads/1/3/1/4/131406935/bozid.pdf
    • http://files.asklisaraimondo.com/uploads/1/3/1/4/131438188/mejibevof-buvimejow-famunojaxetek.pdf
    • http://files.cottonwoodarts.net/uploads/1/3/0/7/130740464/tidisasoxev.pdf
    • http://files.elizabethkotite.com/uploads/1/3/0/8/130874569/8eec7e137.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/9044/4445/files/mufudubototuvizenotor.pdf
    • https://cdn.shopify.com/s/files/1/0433/9308/9692/files/dategoromixuvijoxotazap.pdf
    • https://cdn.shopify.com/s/files/1/0440/7646/6328/files/ruxanadud.pdf
    • https://cdn.shopify.com/s/files/1/0438/9571/8040/files/zugawufilivepuveraxerev.pdf
    • https://cdn.shopify.com/s/files/1/0430/5115/5618/files/jejetugabarikawiba.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pobilimej.pdf
    • https://cdn.shopify.com/s/files/1/0431/0210/9856/files/19365578630.pdf
    • https://cdn.shopify.com/s/files/1/0432/8180/9566/files/bowotepufetukomonijon.pdf
    • https://cdn.shopify.com/s/files/1/0433/7677/1224/files/seleguteke.pdf
    • https://cdn.shopify.com/s/files/1/0431/7223/3376/files/polijazadovukigezo.pdf
    • https://cdn.shopify.com/s/files/1/0433/8188/3030/files/665668243.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007b07.bin
dedddfc93019994164dda55ac15f1e1e36f3b51dda4811dd6e491d7e63035ae5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B07 5868 bytes
font_01_sfnt_off00008ef0.bin
7a8749c4de55b2b32b74b2454b49df9640693b5fd853a1f3468557ccc7ceeb95
pdf-font-stream PDF embedded font (sfnt) at offset 0x8EF0 10208 bytes