Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d62d99f0e156f59…

MALICIOUS

PDF

34.5 KB Created: 2020-08-20 13:21:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 09d5fb816f2618d55f40601640e3b420 SHA-1: cf1ccaa69e577ce867266e16b423e1543180e521 SHA-256: 9d62d99f0e156f5935c9a9223a7b6dc9f101fa60f7d2465b5c69bcbb6004e3ae
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised with a keyword related to a song. This indicates a likely attempt to lure the user to a malicious site for phishing or malware delivery. The PDF also hosts a large number of external links, many pointing to Shopify domains, suggesting a link farm for SEO poisoning or to obscure the final destination. The ML classifier strongly flagged this PDF as malicious.

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.cc/pify?keyword=baarish+song++mr+jatt+yaariyan
    • http://files.browngirlpen.com/uploads/1/3/1/4/131408432/wawolubujelu_belorixefesepuj.pdf
    • http://budeni.holistichealingtrauma.com/uploads/1/3/1/4/131452883/8468010.pdf
    • http://files.rautiaguitars.net/uploads/1/3/1/4/131454143/7a6f3.pdf
    • http://duduw.nefertariliving.org/uploads/1/3/1/4/131437130/915e7.pdf
    • https://cdn.shopify.com/s/files/1/0437/3689/1544/files/12494234823.pdf
    • https://cdn.shopify.com/s/files/1/0432/6372/1637/files/xovixaw.pdf
    • https://cdn.shopify.com/s/files/1/0433/5199/8623/files/85217343828.pdf
    • https://cdn.shopify.com/s/files/1/0437/6893/8658/files/woxidenoda.pdf
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/the_human_stain.pdf
    • https://cdn.shopify.com/s/files/1/0435/1790/3008/files/bodyguard_punjabi_song_video.pdf
    • https://cdn.shopify.com/s/files/1/0439/8533/8526/files/dowafagevane.pdf
    • https://cdn.shopify.com/s/files/1/0431/1282/4993/files/sifuwinipetovixadegu.pdf
    • https://cdn.shopify.com/s/files/1/0435/1528/1568/files/dbms_mini_project_report.pdf
    • https://cdn.shopify.com/s/files/1/0437/3233/6792/files/35939396400.pdf
    • https://cdn.shopify.com/s/files/1/0450/3722/4094/files/eagle_images_hd_1080p.pdf
    • https://cdn.shopify.com/s/files/1/0430/3106/8825/files/66374416747.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_off000048cd.bin
48b7a75f89c40ac6eca0532591f29f333209943e7a235b88548350da363ad631
pdf-font-stream PDF embedded font (sfnt) at offset 0x48CD 5296 bytes
font_01_sfnt_off00005aa8.bin
1e8db920101466179b397a5294280626522e06bf6749d7a54e9ea3c9cac46dba
pdf-font-stream PDF embedded font (sfnt) at offset 0x5AA8 10008 bytes