Malicious PDF — malware analysis report

Static analysis result for SHA-256 43095aa8f7fcec00…

MALICIOUS

PDF

44.2 KB Created: 2020-08-11 16:47:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70fcc57d9775ea227a63e45944cac798 SHA-1: 2043bc0827694852d269333a7e44958e63c4fc74 SHA-256: 43095aa8f7fcec00770e5e3e70503f6233dcf105a74a323fe32521104de2c82e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a lure for an advance-fee scam, presenting a fake job description to entice users. It embeds numerous links, including a critical redirector link to 'ttraff.cc', which is known malicious infrastructure. The document also features a link farm of PDF files hosted on various domains, likely to improve search engine ranking and distribute the malicious content. No scripts were extracted, but the presence of malicious links and the advance-fee scam lure strongly indicate a phishing or social engineering attack.

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.
  • 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.
  • 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=nonprofit+board+of+directors+job+description+pdf
    • http://files.exton-village-hall.com/uploads/1/3/1/3/131379939/dokefulima.pdf
    • http://files.taradennyimages.com/uploads/1/3/1/3/131398547/jejutuvujejekug.pdf
    • http://files.chilhowiechurch.com/uploads/1/3/0/7/130739713/db647d6432a.pdf
    • http://junoz.solutionfm.com/uploads/1/3/1/4/131453177/53a78.pdf
    • https://cdn.shopify.com/s/files/1/0437/0425/4615/files/81041985214.pdf
    • https://cdn.shopify.com/s/files/1/0433/6913/6280/files/tujewopobedutukukemo.pdf
    • https://cdn.shopify.com/s/files/1/0428/4848/5535/files/78995059054.pdf
    • https://cdn.shopify.com/s/files/1/0428/2561/3475/files/96256863097.pdf
    • https://cdn.shopify.com/s/files/1/0428/5880/7455/files/faduxadurajobenede.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/3152232763.pdf
    • https://cdn.shopify.com/s/files/1/0431/9870/9918/files/itshax_clicker_heroes.pdf
    • https://cdn.shopify.com/s/files/1/0435/8373/3915/files/29156130323.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53607129813.pdf
    • https://cdn.shopify.com/s/files/1/0429/8981/3909/files/70895614676.pdf
    • https://cdn.shopify.com/s/files/1/0431/5657/0274/files/kuradesinebazuludaw.pdf
    • https://cdn.shopify.com/s/files/1/0434/3706/4344/files/jereluwuvokuwu.pdf
    • https://cdn.shopify.com/s/files/1/0439/8697/6926/files/slope_intercept_form_to_standard_form_calculator.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e90.bin
a9986f85a6dc093f450a8217427570239b77d6f2714a171b294130c3073a8a1c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E90 5300 bytes
font_01_sfnt_off0000809b.bin
f1ad41000d324e5b97c2e895bdfc19fb1f9fddd8d1141989bc7be7fd4e65f6bf
pdf-font-stream PDF embedded font (sfnt) at offset 0x809B 10100 bytes