Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d114d57bbbb63ed…

MALICIOUS

PDF

36.6 KB Created: 2020-08-15 00:23:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 409cd204410c5a3260c176cd74a43126 SHA-1: 6788b9a3f56421655dfb9830572879ff90473b9d SHA-256: 6d114d57bbbb63ed50051639870923e583cabf3908493ce877d96fa10cc23057
154 Risk Score

Malware Insights

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

The PDF contains embedded links pointing to a redirector service (ttraff.com) which is flagged as malicious. It also features a large number of links to other PDFs hosted on Shopify, suggesting a link farm or SEO spam campaign. While no scripts were explicitly extracted, the presence of embedded URLs and the malicious redirector strongly indicate a malicious intent to lead the user to harmful 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/pify?keyword=dj+remix+song++pagalworld
    • http://xivikov.moglisphotos.com/uploads/1/3/1/3/131384169/4852708.pdf
    • http://files.cherylynsalon.com/uploads/1/3/2/7/132710797/b04a68168.pdf
    • http://favoj.1stpocoscoutinggroup.com/uploads/1/3/1/1/131164250/255136.pdf
    • http://files.grandcelticpipeband.com/uploads/1/3/2/6/132681910/40dea29.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/6976/7842/files/65566197239.pdf
    • https://cdn.shopify.com/s/files/1/0432/4655/1208/files/rupesakavevajikujurali.pdf
    • https://cdn.shopify.com/s/files/1/0438/8257/8088/files/jakazezalakekuzofupater.pdf
    • https://cdn.shopify.com/s/files/1/0430/7510/9013/files/gotatus.pdf
    • https://cdn.shopify.com/s/files/1/0432/4468/3432/files/73548527473.pdf
    • https://cdn.shopify.com/s/files/1/0440/6876/5848/files/11879594915.pdf
    • https://cdn.shopify.com/s/files/1/0434/8660/9573/files/41578056847.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/3359516262.pdf
    • https://cdn.shopify.com/s/files/1/0429/3401/0015/files/gulet.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pelezegagujagemubejapo.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_off00004847.bin
a3fe3a1577a899afdfd0bcf39622641e2b10483e40687b26252eb204544ade30
pdf-font-stream PDF embedded font (sfnt) at offset 0x4847 5512 bytes
font_01_sfnt_off00005b10.bin
82204eecb0373732eac311829ebeccb044c4171238484a37802a3ebbda715b69
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B10 13724 bytes