Malicious PDF — malware analysis report

Static analysis result for SHA-256 020e9cd054801145…

MALICIOUS

PDF

62.1 KB Created: 2020-08-12 20:26:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3233a975c88c5b864f0e3b8961d5643e SHA-1: 800c05f9e78295dcd99ca61e0a8744ed04277036 SHA-256: 020e9cd054801145f96f9f91f88f78e3ed49160e664b1c0e847328468925493b
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to obscure the final destination. The document body, though heavily obfuscated, contains the same URL, suggesting an attempt to lure the user to malicious infrastructure. The presence of numerous Shopify-hosted PDF links further indicates a link farm or SEO poisoning attempt to increase the visibility of the malicious redirector.

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=parliamentary+sovereignty+uk+pdf
    • http://files.ingramelliott.com/uploads/1/3/0/7/130739348/tisivagokatojuvezab.pdf
    • http://files.smithwellbeing.com/uploads/1/3/1/3/131382470/9637367.pdf
    • http://baletazej.onequickchange.com/uploads/1/3/0/7/130738696/3291772.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/0655/8359/files/53379429357.pdf
    • https://cdn.shopify.com/s/files/1/0437/0271/4536/files/87057347287.pdf
    • https://cdn.shopify.com/s/files/1/0429/5219/6249/files/fazasodivozufef.pdf
    • https://cdn.shopify.com/s/files/1/0427/9681/0396/files/nibed.pdf
    • https://cdn.shopify.com/s/files/1/0429/6045/3785/files/dubalevonafa.pdf
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/90546089820.pdf
    • https://cdn.shopify.com/s/files/1/0430/0272/4506/files/71288723801.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/55864873889.pdf
    • https://cdn.shopify.com/s/files/1/0437/3518/7605/files/juvegamufe.pdf
    • https://cdn.shopify.com/s/files/1/0430/5934/7618/files/zilojo.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_off0000b618.bin
26cf7abcc821e7c99daaca0a3272330c45f4723eda4f01922300e5c702bed94b
pdf-font-stream PDF embedded font (sfnt) at offset 0xB618 5588 bytes
font_01_sfnt_off0000c922.bin
2737d77aff2c0d3c04cddd442146675d983d31a4e24f0d3a7fdc827447274ae5
pdf-font-stream PDF embedded font (sfnt) at offset 0xC922 10000 bytes