Malicious PDF — malware analysis report

Static analysis result for SHA-256 a41086a732890fa6…

MALICIOUS

PDF

63.8 KB Created: 2020-08-19 11:50:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b067438eaf09ef46d81fb43206ccf07 SHA-1: bcb0a45c81895735cd492f3b5d4bfc481811f66e SHA-256: a41086a732890fa67198cf92e2b6a0d8a32f668d04945951e7b25592fc14f2e3
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=cheat+engine+apk+ml'. Additionally, it features a PDF link farm heuristic, indicating a large number of external links, with 'https://cdn.shopify.com/s/files/1/0437/6628/4446/files/wusunine.pdf' being the first identified. The document body, though heavily obfuscated, contains these URLs, suggesting the primary intent is to drive traffic to malicious or deceptive content. No scripts were extracted from this sample.

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=cheat+engine+apk+ml
    • http://files.stevendavidtorres.com/uploads/1/3/1/4/131453387/sesizizete_piniripi_nojupodogi_sasuzamazora.pdf
    • http://files.loripetryk.com/uploads/1/3/1/4/131408017/nomibunixul-detusi-wenagavebotej.pdf
    • https://cdn.shopify.com/s/files/1/0437/6628/4446/files/wusunine.pdf
    • https://cdn.shopify.com/s/files/1/0432/1571/6513/files/bowejawaxujo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0489/5143/files/cloud_computing_infrastructure_as_a_service.pdf
    • https://cdn.shopify.com/s/files/1/0437/2951/8741/files/dotazelutejafitabiseli.pdf
    • https://cdn.shopify.com/s/files/1/0430/0092/2261/files/59034029354.pdf
    • https://cdn.shopify.com/s/files/1/0429/3702/4679/files/gangstar_java_game_phoneky.pdf
    • https://cdn.shopify.com/s/files/1/0431/6830/1212/files/42924125894.pdf
    • https://cdn.shopify.com/s/files/1/0431/6843/2288/files/wutigakonuvojar.pdf
    • https://cdn.shopify.com/s/files/1/0435/5080/2081/files/december_2018_monthly_calendar_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/7567/4014/files/2009_lexus_rx_350_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/cours_d_automatisme_gratuit.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/kaweni.pdf
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/wuzexutisulidumitu.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_off0000bd30.bin
95b1d9f47b67a0379955d75467c543cc055b3b4f2733ca33685acd5d7281a232		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBD30 4928 bytes
font_01_sfnt_off0000cdd3.bin
f674825daa7708da063a8ee9ef7ddd754e1bdcd2be2093713ee0f24791b8dc48		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCDD3 10708 bytes

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