Malicious PDF — malware analysis report

Static analysis result for SHA-256 aab1e226c5f8eaba…

MALICIOUS

PDF

73.6 KB Created: 2020-08-22 22:38:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f30cd609ef6371de43b92e0a951b66f6 SHA-1: 3936d89a91bea6d50320c5d184e19b2c03d3663f SHA-256: aab1e226c5f8eaba61452be1fcfc25fd08a4720916463197e467ccb1b53bd277
142 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is likely part of a phishing or scam campaign. The document body, though heavily obfuscated, contains text that appears to be a lure, possibly related to a 'looming tower series' or a catalogue. The presence of numerous external PDF links, many hosted on Shopify, suggests an attempt to create a link farm for SEO manipulation or to distribute malicious content. The heuristic 'SE_CALLBACK_LURE' further supports a phishing or scam pretext.

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.ru/pify?keyword=looming+tower+series
    • http://tisobuwos.lumhc.com/uploads/1/3/1/3/131398134/dikumokukerur-wozixav-bugakajajupesod.pdf
    • http://wogev.nzpics.com/uploads/1/3/0/9/130969406/c68d754f03a7d5.pdf
    • http://xogevoluz.ftbstore.org/uploads/1/3/1/4/131453133/sobegaduki-wodumimarabed.pdf
    • http://files.hitchhouseusa.com/uploads/1/3/1/4/131438758/winesojogorupevagebu.pdf
    • http://files.riversidecoc.net/uploads/1/3/2/6/132681954/bovuzalonoduki.pdf
    • https://cdn.shopify.com/s/files/1/0427/9438/5575/files/automann_suspension_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lojuxefututa.pdf
    • https://cdn.shopify.com/s/files/1/0434/5082/6905/files/49007954951.pdf
    • https://cdn.shopify.com/s/files/1/0431/4261/1095/files/19840610379.pdf
    • https://cdn.shopify.com/s/files/1/0434/5046/6454/files/26828784261.pdf
    • https://cdn.shopify.com/s/files/1/0434/4381/4556/files/frontier_airlines_gate_information.pdf
    • https://cdn.shopify.com/s/files/1/0438/5410/2688/files/handout_master_1._6_crossword_puzzle_answers.pdf
    • https://cdn.shopify.com/s/files/1/0429/7952/4759/files/shell_script_cheat_sheet.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
stream_006_off0000fa87.bin
5330e22b11e930da019e4f29c98a3e95196fa8ca3925e2a2819d35320b05ace1
decompressed-pdf-stream PDF FlateDecoded stream at offset 0xFA87 19088 bytes
font_00_sfnt_off0000c704.bin
55e0d61ce36845d024501f7c9770364e0b459ae3611a4f2c6de808f26ffc37f6
pdf-font-stream PDF embedded font (sfnt) at offset 0xC704 4796 bytes
font_01_sfnt_off0000d758.bin
9a6044598bcad236094d553cbf33bbda1ee5d3772886366338e7a7f8610ee99d
pdf-font-stream PDF embedded font (sfnt) at offset 0xD758 10224 bytes