Malicious PDF — malware analysis report

Static analysis result for SHA-256 49781869e514eb0c…

MALICIOUS

PDF

39.3 KB Created: 2020-08-12 19:13:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4462d6b6a2acc64b8cf8623055659647 SHA-1: 8d6cc892008dae6abb8e75847ed41c9dd2910316 SHA-256: 49781869e514eb0ceac3748b3e00630baff19b2a7ff0887ef61f752c4480dc5e
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector disguised as an 'Oscars 2016 winners list pdf'. The document body, though heavily obfuscated, also contains this URL. The presence of a link farm heuristic further suggests an attempt to distribute malicious content through seemingly benign documents. The primary attack vector is likely social engineering via a malicious link embedded within the PDF.

Heuristics 3

  • 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.
  • 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/wb?keyword=oscars%202016%20winners%20list%20pdf
    • http://files.vincentianspca.org/uploads/1/3/0/9/130969790/7123067.pdf
    • http://files.chriscruzboone.com/uploads/1/3/0/7/130775249/gozipuraka-niwanididoxev-xiwunisexom-bexepivobawe.pdf
    • http://files.meganhigginson.com/uploads/1/3/1/0/131070611/7910132.pdf
    • https://cdn.shopify.com/s/files/1/0429/2021/4681/files/xawukoxukurunomixop.pdf
    • https://cdn.shopify.com/s/files/1/0431/7950/7870/files/solve_linear_equations.pdf
    • https://cdn.shopify.com/s/files/1/0431/1161/2572/files/igcse_acids_and_bases_notes.pdf
    • https://cdn.shopify.com/s/files/1/0438/4659/8821/files/zobesijasepu.pdf
    • https://cdn.shopify.com/s/files/1/0440/4133/9030/files/free_grade_curve_calculator.pdf
    • https://cdn.shopify.com/s/files/1/0430/9165/6864/files/dictionnaire_de_l_academie_francaise.pdf
    • https://cdn.shopify.com/s/files/1/0431/5129/4619/files/biomedical_model_of_health_psychology.pdf
    • https://cdn.shopify.com/s/files/1/0434/2087/6962/files/95791941576.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nemevisofopanufu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3802/3592/files/673_king_street.pdf
    • https://cdn.shopify.com/s/files/1/0435/4696/8218/files/mowajoriladejus.pdf
    • https://cdn.shopify.com/s/files/1/0431/6951/3632/files/bls_cpr_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/3764/6245/files/lelujuzojovuniveribixun.pdf
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/jimavijubuvovomil.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_off00005b31.bin
2c0b132c57b36b182edb5539bedc6b5976c88e579de204f45c1ba842c270e7d4
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B31 5748 bytes
font_01_sfnt_off00006ee2.bin
f155cdf55a4f2076caaa32ba411bcc57aa412aad34d70d6fa52637c87e951868
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE2 9796 bytes