Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4e81369290a117a…

MALICIOUS

PDF

44.8 KB Created: 2020-08-24 03:12:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99dca2ec67a3770e222a5d0f130baa65 SHA-1: de246c5d3ea5e8ce628132311c1a42279655d334 SHA-256: a4e81369290a117aa60c6f8b8dfaf9fcf97717bec269383ded66c1f4fca4b7e4
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF contains a large number of embedded links, many of which point to a redirector service. One such link, 'https://ttraff.com/pify?keyword=activesync.+t-+online.+de+outlook+android', is explicitly flagged as malicious. The document body, though heavily obfuscated, contains this URL, suggesting the primary intent is to drive users to malicious infrastructure. The presence of a callback phishing lure heuristic further supports a social engineering attack pattern.

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.com/pify?keyword=activesync.+t-+online.+de+outlook+android
    • http://files.911bodyresq.com/uploads/1/3/0/7/130776118/natarudul-wasawebi-pifag-nisaneneduk.pdf
    • http://lunuviz.junkanddisorderlyaz.com/uploads/1/3/0/8/130814017/jefovikalenin_rutusonizoxum_daler_waxeleje.pdf
    • http://wusol.troupe2757goestoscotland.com/uploads/1/3/1/4/131437064/367781.pdf
    • http://dixiz.duniaamir.com/uploads/1/3/1/4/131438019/kavibilazefi.pdf
    • http://files.3dpd.co.za/uploads/1/3/1/4/131406835/pexevek.pdf
    • https://cdn.shopify.com/s/files/1/0464/7596/8662/files/20540524744.pdf
    • https://cdn.shopify.com/s/files/1/0432/1725/6605/files/phonics_reading_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0429/8250/6647/files/15504198776.pdf
    • https://cdn.shopify.com/s/files/1/0429/3053/6614/files/copper_mountain_snow_report.pdf
    • https://cdn.shopify.com/s/files/1/0429/6740/0601/files/96755738916.pdf
    • https://cdn.shopify.com/s/files/1/0440/2744/5413/files/maxogojaliwagotatiminad.pdf
    • https://cdn.shopify.com/s/files/1/0432/6581/8789/files/74587488840.pdf
    • https://cdn.shopify.com/s/files/1/0434/7779/4982/files/coalescent_theory_wakeley.pdf
    • https://cdn.shopify.com/s/files/1/0428/7853/3788/files/48393977898.pdf
    • https://cdn.shopify.com/s/files/1/0434/5095/7991/files/35761853758.pdf
    • https://cdn.shopify.com/s/files/1/0432/2652/9956/files/all_phylum_of_kingdom_animalia.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_off000071d1.bin
ff31951f7a8566c3dd06572541ecafc9445863ffb6ea42e4b89bdd7d812c27a8
pdf-font-stream PDF embedded font (sfnt) at offset 0x71D1 5212 bytes
font_01_sfnt_off000083aa.bin
3826cb27eb15fba63c0b9aa47380f498ab525a3d4a94f63a1f42ea9f6218f115
pdf-font-stream PDF embedded font (sfnt) at offset 0x83AA 10004 bytes