Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e1bbbe9041c9369…

MALICIOUS

PDF

45.9 KB Created: 2020-08-06 13:29:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe62b92cfae36b726cd3c17a9e913457 SHA-1: 560e8004c7d5fa0015f0fabb45c1a262ecab9af1 SHA-256: 4e1bbbe9041c93691cdd31edb9f5be80f639f5e7ae562519e3f54bea11ca6650
128 Risk Score

Malware Insights

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

The PDF contains numerous links, with one heuristic identifying a critical link to known malicious redirector infrastructure. The document body, though partially corrupted, contains the same URL that is flagged as malicious. The presence of a 'download button' heuristic further supports the lure-based attack pattern. The primary IOC is the redirector URL, which is designed to lead users to 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=interactions+collaboration+skills+for+school+professionals+8th+edition+pdf
    • http://duwegom.christinezoppi.com/uploads/1/3/1/4/131453494/pexubiwozupemuz_meriseniferupik_jutizif.pdf
    • http://files.lastwordsfortheroad.com/uploads/1/3/1/8/131871849/muludof_pifotekasi_xonevopegasel.pdf
    • http://files.mysustainablefashion.com/uploads/1/3/1/4/131454581/nefulep.pdf
    • http://files.mybleusolyoga.com/uploads/1/3/2/6/132683357/b9efe656158ef4e.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89647405972.pdf
    • https://cdn.shopify.com/s/files/1/0428/7679/7081/files/vimorinukise.pdf
    • https://cdn.shopify.com/s/files/1/0429/8866/7034/files/dragon_ball_mugen.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wexanenivoxepabulolud.pdf
    • https://cdn.shopify.com/s/files/1/0431/0741/8273/files/sipije.pdf
    • https://cdn.shopify.com/s/files/1/0429/7854/1727/files/81101853056.pdf
    • https://cdn.shopify.com/s/files/1/0431/0253/5840/files/49872199325.pdf
    • https://cdn.shopify.com/s/files/1/0432/2469/4942/files/49971063521.pdf
    • https://cdn.shopify.com/s/files/1/0435/4267/5608/files/mepawazu.pdf
    • https://cdn.shopify.com/s/files/1/0427/7813/2636/files/kejuxibogumetipis.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xarapidarobumebavo.pdf
    • https://cdn.shopify.com/s/files/1/0434/1488/0405/files/debonobuwonidifimov.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_off000063c1.bin
b88ccad00fedb0fb704df01d0d0576da81f1a4c13917dcff2d61e43696e5153a
pdf-font-stream PDF embedded font (sfnt) at offset 0x63C1 5368 bytes
font_01_sfnt_off000075dc.bin
ff6487edd764ffa27980a4152c6605ab149b79b5be49436e34984797befc3683
pdf-font-stream PDF embedded font (sfnt) at offset 0x75DC 10452 bytes
font_02_sfnt_off0000996b.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x996B 4324 bytes