Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad91b252ae8eb297…

MALICIOUS

PDF

49.2 KB Created: 2020-08-12 08:47:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ffe4a6088cca9d03ff7817a0b6fd6d4d SHA-1: df3be883370110d7ac35e23666c21519e6727d42 SHA-256: ad91b252ae8eb29758861c35bee6e3b955820c6cba0b43571c57602f6e7cfdcb
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as a download for 'Campbell ap biology 9th edition pdf download'. The primary malicious link, https://ttraff.cc/pify?keyword=campbell+ap+biology+9th+edition+pdf+download, is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other links to PDF files hosted on various domains, suggesting a phishing or malware distribution attempt.

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/pify?keyword=campbell+ap+biology+9th+edition+pdf+download
    • http://numaja.ekeskogs-ridingacademy.com/uploads/1/3/1/4/131437508/jirenogif_kumoridesuroliz_kasadulotiresa.pdf
    • http://files.theglasshouseretreat.com/uploads/1/3/0/7/130776487/2640315.pdf
    • http://files.bbsimon.com/uploads/1/3/2/6/132682570/tudijimavu.pdf
    • http://files.evangelistictempleofiam.net/uploads/1/3/1/4/131438113/lirula-sozefif.pdf
    • http://files.ashleyinsurance.net/uploads/1/3/1/3/131379803/zarak-jafiwuv-liroxaririfag.pdf
    • https://cdn.shopify.com/s/files/1/0434/8762/5369/files/80152179633.pdf
    • https://cdn.shopify.com/s/files/1/0432/5172/8546/files/history_of_automated_teller_machine.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wawufomujemozinabewa.pdf
    • https://cdn.shopify.com/s/files/1/0435/6508/8936/files/komanowaxipase.pdf
    • https://cdn.shopify.com/s/files/1/0429/6399/2742/files/59854168622.pdf
    • https://cdn.shopify.com/s/files/1/0440/5064/5157/files/molecular_biophysics.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/fadajigozozotabisuze.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bisadugizutojaririxenudep.pdf
    • https://cdn.shopify.com/s/files/1/0433/3443/4974/files/13813514116.pdf
    • https://cdn.shopify.com/s/files/1/0433/8266/9461/files/gosapinimokuxumo.pdf
    • https://cdn.shopify.com/s/files/1/0430/9896/4117/files/asmaul_husna_bahasa_indonesia.pdf
    • https://cdn.shopify.com/s/files/1/0433/4590/3774/files/toyota_4runner_manual_transmission_for_sale.pdf
    • https://cdn.shopify.com/s/files/1/0438/2726/5693/files/49442273244.pdf
    • https://cdn.shopify.com/s/files/1/0431/4241/4493/files/guxufufunemexadebovosefu.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_off0000803c.bin
2a13225a8bc0b1799b1b68e251ddc2f3e0f928d1eb50200bcda1951ca326af12
pdf-font-stream PDF embedded font (sfnt) at offset 0x803C 5576 bytes
font_01_sfnt_off0000932d.bin
030daf21eeb5a96e36ca332800452dbc27b6ad4b7f6433d4bb7db35f78f01b21
pdf-font-stream PDF embedded font (sfnt) at offset 0x932D 10456 bytes