Malicious PDF — malware analysis report

Static analysis result for SHA-256 847d2d7b7242c7ac…

MALICIOUS

PDF

43.1 KB Created: 2020-08-14 20:49:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75d69a9007dfc3a477b8dd0c0eda13fd SHA-1: c72d4dee8b6523fb4da707b954bfd0fbcc409e07 SHA-256: 847d2d7b7242c7acfb6450f3c577576d8f3217bdbd53733088870438fd9e7606
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to funnel victims to a phishing or scam page. The document body text, though partially corrupted, includes keywords related to Google account deletion, reinforcing the phishing lure. The presence of numerous external PDF links suggests a link farm or SEO manipulation tactic to distribute the 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.cc/pify?keyword=supprimer+compte+google+mail+android
    • http://files.xquisitebalance.com/uploads/1/3/0/7/130738960/nigakaw_fovuzaf_mupimorike_migadoliz.pdf
    • http://gogopo.nirvanatails.biz/uploads/1/3/2/6/132681352/bavuxunu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0429/7578/9215/files/gonna_get_over_you_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0427/5847/1846/files/46552900387.pdf
    • https://cdn.shopify.com/s/files/1/0433/8791/2346/files/68726348021.pdf
    • https://cdn.shopify.com/s/files/1/0433/5442/3464/files/xabikevolefaxujaj.pdf
    • https://cdn.shopify.com/s/files/1/0430/7196/3296/files/27695510873.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8861538602.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32878299647.pdf
    • https://cdn.shopify.com/s/files/1/0431/8488/1825/files/ruvagerevefabotegut.pdf
    • https://cdn.shopify.com/s/files/1/0428/5769/3347/files/42081211092.pdf
    • https://cdn.shopify.com/s/files/1/0429/0579/6774/files/lofodalakutunafosegop.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000059f5.bin
8265d3cb5c17b64bdd4a88031ee9269626881aef98f75b0530d0cf1877a957c7
pdf-font-stream PDF embedded font (sfnt) at offset 0x59F5 5200 bytes
font_01_sfnt_off00006b7e.bin
ca07a1f2ac7f74e5e49fe373619e812f6fa2d6cfaf31f28ee7caff642c6bccbd
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B7E 11468 bytes
font_02_sfnt_off00009030.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9030 4324 bytes