Malicious PDF — malware analysis report

Static analysis result for SHA-256 943a62f8565f82b7…

MALICIOUS

PDF

86.4 KB Created: 2020-08-23 07:10:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a5f66c5b181adc85d98b81ee6433943 SHA-1: 29fe083e99c4507276e7984f99a5bca2f819f1de SHA-256: 943a62f8565f82b7a87e3cd923a4ac239986c1efbc01c295a0f1479f57dc808a
140 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one heuristic specifically identifying a malicious redirector. The document body, though heavily obfuscated, contains a URL that aligns with the malicious redirector finding. Another heuristic indicates a 'link farm' structure, suggesting an attempt to distribute or host numerous malicious documents. The presence of a callback lure heuristic further supports a phishing or scam pretext.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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.ru/pify?keyword=oecd+guidelines+transfer+pricing+methods
    • http://files.evanbarbee.com/uploads/1/3/0/8/130874217/f1581e3842.pdf
    • http://mewiwuwop.chillnbeans.com/uploads/1/3/0/7/130775795/vetixapolivibolov.pdf
    • http://files.small-product-photography.com/uploads/1/3/1/4/131407511/2558618.pdf
    • http://files.baileyspetwellbeing.com/uploads/1/3/0/9/130969907/foniwa_vanawum.pdf
    • https://cdn.shopify.com/s/files/1/0437/2715/9448/files/rassembler_fichier_en_ligne.pdf
    • https://cdn.shopify.com/s/files/1/0430/1075/2663/files/vba_set_date_time_format.pdf
    • https://cdn.shopify.com/s/files/1/0430/4994/3202/files/ts_16949.pdf
    • https://cdn.shopify.com/s/files/1/0437/9557/9029/files/nhs_self_certification_sickness_form.pdf
    • https://cdn.shopify.com/s/files/1/0435/7927/7467/files/sandwich_theorem_calculus.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34803766861.pdf
    • https://cdn.shopify.com/s/files/1/0428/9229/6359/files/janib.pdf
    • https://cdn.shopify.com/s/files/1/0439/4260/9051/files/parametric_versus_nonparametric_tests.pdf
    • https://cdn.shopify.com/s/files/1/0434/5122/0120/files/68399928665.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wudivilijekeroleve.pdf
    • https://cdn.shopify.com/s/files/1/0436/9917/5579/files/classroom_seating_chart_template.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81159011373.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_off00010461.bin
4c3ed7bf614e1c6ef773ce58ee19998e8ad35906649545b579f7c87656146dbb
pdf-font-stream PDF embedded font (sfnt) at offset 0x10461 5596 bytes
font_01_sfnt_off0001173a.bin
eb95b0c2288e947cd14aeb20e9f3693e3413e1083c19fb80367390a3659d08a7
pdf-font-stream PDF embedded font (sfnt) at offset 0x1173A 16456 bytes