Malicious PDF — malware analysis report

Static analysis result for SHA-256 814610c2fdb77a3f…

MALICIOUS

PDF

42.2 KB Created: 2020-08-08 04:29:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a4742171452e2e609deaa26aca57bc8 SHA-1: e98e795230fd7870feb4294aa2c2fb915f891493 SHA-256: 814610c2fdb77a3f8ccc03a779858cffacbd0e6f94d2b87283cad77743d7bc5a
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with a critical heuristic firing indicating a malicious redirector. The primary URL points to a redirector service, likely part of a phishing or scam campaign. The document body itself is heavily obfuscated and contains a mix of text and what appears to be encoded data, further obscuring its true purpose but reinforcing the malicious nature of the embedded links.

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.com/pify?keyword=irena+dobrzycka+bronis%25C5%2582aw+kopczy%25C5%2584ski+j%25C4%2599zyk+angielski+dla+pocz%25C4%2585tkuj%25C4%2585cych+pdf
    • http://files.phoenixlegacyofcompassion.org/uploads/1/3/1/3/131381607/5743294.pdf
    • http://files.iaphilosophicalanthropology.org/uploads/1/3/0/9/130969801/lavatowito-kojara.pdf
    • http://files.holapostpartum.com/uploads/1/3/1/3/131384468/kipalujegugibu.pdf
    • http://files.trainhardplayharder.com/uploads/1/3/1/4/131483147/ca7028e78918.pdf
    • http://files.landartfinegardening.com/uploads/1/3/0/7/130740211/ce6cb397ac.pdf
    • https://cdn.shopify.com/s/files/1/0438/9280/1704/files/koxizibivilerukumoni.pdf
    • https://cdn.shopify.com/s/files/1/0430/0849/1673/files/abordagem_sistemica_na_educao_fisica.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/93515438816.pdf
    • https://cdn.shopify.com/s/files/1/0435/5702/8001/files/wagememenanufinidapon.pdf
    • https://cdn.shopify.com/s/files/1/0429/5265/5002/files/wejisebi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1826/4469/files/dimirukurudokoditi.pdf
    • https://cdn.shopify.com/s/files/1/0429/5042/6787/files/jidodukajapapivopew.pdf
    • https://cdn.shopify.com/s/files/1/0432/3645/8654/files/75899397208.pdf
    • https://cdn.shopify.com/s/files/1/0434/9739/0244/files/competitive_analysis_example_for_restaurant.pdf
    • https://cdn.shopify.com/s/files/1/0429/3469/8147/files/3579310487.pdf
    • https://cdn.shopify.com/s/files/1/0435/1026/8064/files/vatosubipofugezew.pdf
    • https://cdn.shopify.com/s/files/1/0432/8331/6891/files/genuwunogadi.pdf
    • https://cdn.shopify.com/s/files/1/0434/0239/5813/files/1382827320.pdf
    • https://cdn.shopify.com/s/files/1/0436/7079/8489/files/porokixazanazow.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/
    • https://cdn.shopify.com/s/f

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f0f.bin
194a7008e73834903c39a8fad80dcdb8406ee9ec2ab80b2c23726c0317d98dd5
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F0F 6516 bytes
font_01_sfnt_off0000742a.bin
d08ebd9907c8fb547f183c6200ece3a78ba1c24c2cfdc3a1536718705c583b57
pdf-font-stream PDF embedded font (sfnt) at offset 0x742A 11132 bytes