Malicious PDF — malware analysis report

Static analysis result for SHA-256 86a2e3815bd3ee5b…

MALICIOUS

PDF

40.4 KB Created: 2020-08-23 02:11:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a19f99abcd5217bf2a180769c6f3b6b4 SHA-1: 77737b4a7f378ccd265e2ecbbf2f8fdc354e8ecb SHA-256: 86a2e3815bd3ee5b157583284bde0ed628293ad051fb719ef7ca6045aef6a85c
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing a malicious redirector link and a large number of external links, suggesting a link farm. The primary malicious URL identified is https://ttraff.cc/pify?keyword=2010+chevrolet+impala+reviews+consumer+reports. While no scripts were extracted, the presence of numerous links and the critical heuristic firings strongly indicate a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=2010+chevrolet+impala+reviews+consumer+reports
    • http://files.meganmilleryoga.com/uploads/1/3/2/6/132682640/3791863.pdf
    • https://cdn.shopify.com/s/files/1/0432/0667/2546/files/78397182236.pdf
    • https://cdn.shopify.com/s/files/1/0431/7678/8117/files/magnimar_city_of_monuments.pdf
    • https://cdn.shopify.com/s/files/1/0429/9957/8773/files/claim_evidence_reasoning_template_elementary.pdf
    • https://cdn.shopify.com/s/files/1/0439/0918/5688/files/search_for_files_only.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kuzizurogepibisomagin.pdf
    • https://cdn.shopify.com/s/files/1/0438/2228/4960/files/twenty_seventeen_full_width.pdf
    • https://cdn.shopify.com/s/files/1/0435/2717/6343/files/vowels_and_consonants_in_english_phonetics.pdf
    • https://cdn.shopify.com/s/files/1/0435/6122/2307/files/bsc_physical_chemistry_notes.pdf
    • https://cdn.shopify.com/s/files/1/0433/7529/6670/files/c_template_alias_typedef.pdf
    • https://cdn.shopify.com/s/files/1/0430/5226/9717/files/miracle_crack_loader_2._58.pdf
    • https://cdn.shopify.com/s/files/1/0433/4669/0203/files/wifiwomoxepokanixafid.pdf
    • https://cdn.shopify.com/s/files/1/0432/9173/8277/files/30723912193.pdf
    • https://cdn.shopify.com/s/files/1/0430/6377/1293/files/burket_oral_medicine_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/2682/4863/files/beetlejuice_day-_o_banana_boat_song.pdf
    • https://cdn.shopify.com/s/files/1/0433/1231/6584/files/68342966337.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_off00005f0d.bin
a5faa3f65a01431d06c72dcc6e54b14faa56c7116f7c04f2067d91b5cbf05fb8
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F0D 5556 bytes
font_01_sfnt_off000071d8.bin
15739e0a432f47118d25b18b8999f415e493f31406843cb61f51e37f2620c262
pdf-font-stream PDF embedded font (sfnt) at offset 0x71D8 10128 bytes