Malicious PDF — malware analysis report

Static analysis result for SHA-256 5abddcc4b3aa81c0…

MALICIOUS

PDF

50.4 KB Created: 2020-08-31 00:10:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5078378b405846770ad0300ae491f8d0 SHA-1: e5898df2e956638f0d6feeb6e4aa99b2a4d99619 SHA-256: 5abddcc4b3aa81c0e0d46aa352bd67fa0bf89fb1a8d83dbe1b8cb198865335ad
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to a known malicious domain, ttraff.com, under the guise of a music download. This indicates a phishing or social engineering attempt to redirect the user to malicious content. The PDF also contains a large number of links to Shopify, likely part of a link farm to improve search engine ranking for malicious content.

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/wix?keyword=download+cd+foo+fighters+greatest+hi
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/5869/1232/files/17985760507.pdf
    • https://cdn.shopify.com/s/files/1/0432/6470/4662/files/the_lost_city_osrs.pdf
    • https://cdn.shopify.com/s/files/1/0431/7983/5547/files/wipajubumotafiwupo.pdf
    • https://cdn.shopify.com/s/files/1/0439/4529/6027/files/song_of_the_albigensian_crusade.pdf
    • https://cdn.shopify.com/s/files/1/0435/0862/9659/files/tony_hawk_s_american_wasteland_soundtrack.pdf
    • https://static.usrfiles.com/ugd/b8c837_e41261e3f39d47ac8a0695c7094588b7.pdf
    • https://static.usrfiles.com/ugd/162fe6_318c3363b3604d10a99c5d744a743ffe.pdf
    • https://cdn.shopify.com/s/files/1/0437/9734/8514/files/74802662689.pdf
    • https://cdn.shopify.com/s/files/1/0434/4345/4102/files/rikavufumivepumivedajira.pdf
    • https://cdn.shopify.com/s/files/1/0434/4017/7317/files/jipofawagugonovutefagepo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5177/7185/files/40809338117.pdf
    • https://cdn.shopify.com/s/files/1/0439/5683/0366/files/nivin_pauly_vaathil_melle.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_off00007c6e.bin
a73576109913f438d3114f2c7595351acaf90b9b86b8366563144ce394235689
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C6E 5376 bytes
font_01_sfnt_off00008ec0.bin
017d8f222d2e9bcbdcacc55e315777865a25c90fb4ee5d833427267d41493b6c
pdf-font-stream PDF embedded font (sfnt) at offset 0x8EC0 15016 bytes