Malicious PDF — malware analysis report

Static analysis result for SHA-256 888d48bf384f8949…

MALICIOUS

PDF

42.7 KB Created: 2020-08-09 22:52:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e29436bd6b96f482e17b3c97c777a5e6 SHA-1: 127654d4806f397bf2978f7f634a75fa559a090e SHA-256: 888d48bf384f89497cd527edce9053583a417d4c2f945e20eb2d754fb9723481
142 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one prominent link redirecting to malicious infrastructure. The document body text, though heavily obfuscated, contains the string 'computer science engineering pdf' and the malicious URL, suggesting a lure to trick users into clicking. The presence of numerous PDF links, many hosted on Shopify, indicates a link farm strategy. No scripts were extracted from this sample.

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=computer+science+engineering+pdf
    • http://files.3dbikefit.com/uploads/1/3/0/7/130740625/maxiwudimaned_xunumakorip_zenunigak.pdf
    • http://files.lithoscounselingandconsulting.com/uploads/1/3/0/8/130814308/9249196.pdf
    • http://files.marketstreetartspot.com/uploads/1/3/0/7/130739719/8107619.pdf
    • https://cdn.shopify.com/s/files/1/0429/5501/4298/files/paraphrase_exercises_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0432/6470/4662/files/topaje.pdf
    • https://cdn.shopify.com/s/files/1/0435/3500/7893/files/dowidifusebejilepub.pdf
    • https://cdn.shopify.com/s/files/1/0431/7839/3749/files/skf_flange_bearing_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0434/4207/7852/files/olin_ross_sound_system_or860_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/9513/0266/files/25167630555.pdf
    • https://cdn.shopify.com/s/files/1/0428/4776/4636/files/dodexa.pdf
    • https://cdn.shopify.com/s/files/1/0430/0632/8985/files/47154595249.pdf
    • https://cdn.shopify.com/s/files/1/0431/9186/1410/files/53216872712.pdf
    • https://cdn.shopify.com/s/files/1/0434/6180/4197/files/28761194175.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_off0000671f.bin
399ab077fe1005afb321d70339a68af152fc223a0da7d818df067f7606382539		 pdf-font-stream PDF embedded font (sfnt) at offset 0x671F 5136 bytes
font_01_sfnt_off00007880.bin
89360a87e45e28dd89cca0489f942e63269ad22af5b5918c62dc9e6032bd6847		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7880 10928 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.