Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ee8dd5b1a74f00f…

MALICIOUS

PDF

41.2 KB Created: 2020-08-24 22:49:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2871afaccd409e1991fba28cacad5f76 SHA-1: b916ac6c67a7ae2236b7a2ff860100ab6a9e47ca SHA-256: 8ee8dd5b1a74f00f7c3080b7d607d137c92bccf58cf79aaa2f78bcff8363b7d9
154 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a music video, which is a common lure for phishing or malware delivery. The ML classifier strongly indicated maliciousness. The document body and embedded URLs point to a link farm hosted on Shopify, with the primary malicious redirector being ttraff.com. This suggests a campaign focused on SEO poisoning or deceptive link farms to distribute further payloads.

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=thinking+out+loud+music+video
    • http://files.bounce4batten.com/uploads/1/3/1/4/131407388/fetepuwu.pdf
    • https://cdn.shopify.com/s/files/1/0436/2466/1154/files/ziburivuwaxetufuma.pdf
    • https://cdn.shopify.com/s/files/1/0434/8946/0376/files/funix.pdf
    • https://cdn.shopify.com/s/files/1/0431/8042/5370/files/bavut.pdf
    • https://cdn.shopify.com/s/files/1/0428/5127/0823/files/lowukiniwadefe.pdf
    • https://cdn.shopify.com/s/files/1/0433/4669/0203/files/powezeleriripeze.pdf
    • https://cdn.shopify.com/s/files/1/0431/8596/3168/files/malcontents_ring_sekiro.pdf
    • https://cdn.shopify.com/s/files/1/0434/1035/8423/files/internet_booster_app_free.pdf
    • https://cdn.shopify.com/s/files/1/0438/7959/6187/files/construction_agreement_format_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0434/2602/1527/files/19777950214.pdf
    • https://cdn.shopify.com/s/files/1/0431/8239/1451/files/jomokululedes.pdf
    • https://cdn.shopify.com/s/files/1/0434/1805/8901/files/67042902723.pdf
    • https://cdn.shopify.com/s/files/1/0428/8564/4447/files/maliwurule.pdf
    • https://cdn.shopify.com/s/files/1/0431/2917/6232/files/happymod_apk_2._0._0.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xajubebajodefemun.pdf
    • https://cdn.shopify.com/s/files/1/0430/2667/7913/files/48135410210.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062f0.bin
917fac5c8191b8302641d5493345078be4a68afd85538151cc3d5c06da4664b7
pdf-font-stream PDF embedded font (sfnt) at offset 0x62F0 5120 bytes
font_01_sfnt_off00007435.bin
118cefb33384942d6a1b0726f7d42d1c02e0d83fe188242911b3b7897743e9cc
pdf-font-stream PDF embedded font (sfnt) at offset 0x7435 10444 bytes