Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ed987a4a193e788…

MALICIOUS

PDF

103.6 KB Created: 2020-07-27 12:55:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cc94b11c1b59543a2e503e19a5fc34c7 SHA-1: 998e5f2980bc44c28897c2fd6456d7abc4da0a20 SHA-256: 6ed987a4a193e788a054cdc0482651880789bc0327b32497e8e1873bae8a18b3
202 Risk Score

Malware Insights

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

The PDF contains heuristics indicating it is a malicious redirector and an advance-fee scam lure. It embeds a link to a known malicious redirector, ttraff.com, which is likely used to lead the user to a phishing or malware site. The document body, though heavily obfuscated, contains keywords related to invoices and advance fees, reinforcing the scam lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=answering+service+companies+near+me
    • http://files.noahministries.org/uploads/1/3/1/6/131637273/jepujo_susedupubivajag.pdf
    • http://files.dualcredit23.com/uploads/1/3/1/4/131483108/748266e8.pdf
    • http://files.dogsbydana.com/uploads/1/3/0/7/130739474/roditesomotuzo-binopawose-sufusuw-rejamiwudel.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/5098/2821/files/35447549864.pdf
    • https://cdn.shopify.com/s/files/1/0432/7335/5419/files/daguzo.pdf
    • https://cdn.shopify.com/s/files/1/0432/6191/9396/files/81257776519.pdf
    • https://cdn.shopify.com/s/files/1/0434/2746/3324/files/71550750840.pdf
    • https://cdn.shopify.com/s/files/1/0433/7077/4677/files/90357355478.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/fufomurasulilibo.pdf
    • https://cdn.shopify.com/s/files/1/0430/0118/4417/files/zitalaxupilegotaku.pdf
    • https://cdn.shopify.com/s/files/1/0432/2702/1480/files/11295719407.pdf
    • https://cdn.shopify.com/s/files/1/0429/7015/3113/files/16525829466.pdf
    • https://cdn.shopify.com/s/files/1/0429/5481/7690/files/forimiximezalisepok.pdf
    • https://cdn.shopify.com/s/files/1/0436/2466/1154/files/xudulujoj.pdf
    • https://cdn.shopify.com/s/files/1/0430/5004/1495/files/fogudakokatenelev.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_off00015a0f.bin
00ded532c80b3ac42dac6dc0aa2782649a430930524ffd28b6a74c55463df733		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15A0F 5072 bytes
font_01_sfnt_off00016b33.bin
0ee6bf978609cc25dde0692ad16f9dc1ba64b8cd9394d18a5c05ea6fd6dccbd7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16B33 10996 bytes

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