Malicious PDF — malware analysis report

Static analysis result for SHA-256 af5cb5b4aead0ecf…

MALICIOUS

PDF

47.3 KB Created: 2020-08-04 19:38:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f21c100cdc357ad41474828214ccf82e SHA-1: f939e62b3a3e234c011ea041908bdadac55b0d59 SHA-256: af5cb5b4aead0ecfb214107c1c5959d6e48f8cea4ef4cd004a3470d87e0ea111
142 Risk Score

Malware Insights

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

The PDF contains a link farm designed to mimic search engine results, with a primary malicious redirector URL. The document body, though heavily obfuscated, contains references to 'Uber data breach case study pdf' and the malicious URL, indicating a lure to a phishing or malware distribution site. The presence of numerous external PDF links suggests an attempt to manipulate search engine rankings or distribute further malicious content.

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.cc/pify?keyword=uber+data+breach+case+study+pdf
    • http://files.nolimitsgb.org/uploads/1/3/1/6/131606408/pavezoki.pdf
    • http://files.darvanadoulaservices.com/uploads/1/3/1/3/131381374/83738.pdf
    • http://files.traceymcgovernphotography.com/uploads/1/3/0/7/130775647/maxelofidelata.pdf
    • http://files.nosterud.com/uploads/1/3/1/3/131379699/jabuvitixabigen.pdf
    • http://files.sr3d.co.uk/uploads/1/3/1/3/131380308/4353398.pdf
    • https://cdn.shopify.com/s/files/1/0428/8764/3302/files/39485973763.pdf
    • https://cdn.shopify.com/s/files/1/0428/6355/8815/files/45636383980.pdf
    • https://cdn.shopify.com/s/files/1/0435/2311/3119/files/koxaluzotenuluk.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sebifoxof.pdf
    • https://cdn.shopify.com/s/files/1/0436/0290/3202/files/13420414495.pdf
    • https://cdn.shopify.com/s/files/1/0430/3935/9127/files/vefekabovikofunuku.pdf
    • https://cdn.shopify.com/s/files/1/0432/4635/4594/files/twilight_the_graphic_novel_collector_s_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/7410/1160/files/maxxforce_7_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/2940/4567/files/84052311122.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fovurasavelibegesixaga.pdf
    • https://cdn.shopify.com/s/files/1/0430/3536/1442/files/tabedikenipasikimixud.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006be5.bin
d17e2f45005dd8927d2a83523b3878b75aea0010a598bc34d865b444c44eab7f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE5 5064 bytes
font_01_sfnt_off00007d32.bin
63c95adbb51f9bbe89ceda46fd98bd7b24d88c9fcad1e102afbc746479401575
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D32 10876 bytes
font_02_sfnt_off0000a21c.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0xA21C 4324 bytes