Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd95c789aa812107…

MALICIOUS

PDF

42.2 KB Created: 2020-08-09 11:42:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e85e8814a815206585cdc908917e778 SHA-1: a59651d9f49f6877ec7fa5fc7cd9a5ec28d653ea SHA-256: fd95c789aa812107be85c13f9e101f047ee66100ebfeb040c5192c4d5ed64646
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector link to 'ttraff.com'. The document body, though heavily obfuscated, contains text suggesting it is disguised as 'Blokus game instructions pdf'. This indicates a social engineering attempt to trick users into clicking the malicious URL, likely for phishing or malware distribution. The presence of many external links, including to Shopify, suggests a link farm or SEO poisoning tactic to increase visibility.

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=blokus+game+instructions+pdf
    • http://vefozewe.musictherapywithshari.com/uploads/1/3/0/8/130814229/xanibugizu-newagolije-jabogaveperan-nidetiko.pdf
    • http://files.bberidesserts.com/uploads/1/3/1/4/131437158/jesexutibax_pewujige.pdf
    • http://files.mslacroix.ca/uploads/1/3/2/6/132683181/8219fe85.pdf
    • https://cdn.shopify.com/s/files/1/0438/1632/1184/files/dubinumisuwobera.pdf
    • https://cdn.shopify.com/s/files/1/0434/5040/0928/files/fepajatefamabupugisegir.pdf
    • https://cdn.shopify.com/s/files/1/0430/0128/2711/files/morphology_and_anatomy_of_earthworm.pdf
    • https://cdn.shopify.com/s/files/1/0427/6341/9815/files/19718464545.pdf
    • https://cdn.shopify.com/s/files/1/0432/9403/2025/files/sejimezotebisineze.pdf
    • https://cdn.shopify.com/s/files/1/0433/9027/1642/files/ruxojulujabozijom.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20880330559.pdf
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/sky_is_the_limit_lyric.pdf
    • https://cdn.shopify.com/s/files/1/0438/2585/6669/files/witakuzetipeligoxizutipa.pdf
    • https://cdn.shopify.com/s/files/1/0434/9234/3970/files/juxovazot.pdf
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/alter_ego_plus_1_cahier_d_activits_corrige.pdf
    • https://cdn.shopify.com/s/files/1/0435/5706/0769/files/jntu_b_tech_ece_syllabus.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_off000064c3.bin
5988858ae06bc468291f9ab52cefcd2d669a6563c717f135590cd9cfe88e3fb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64C3 5588 bytes
font_01_sfnt_off000077b3.bin
22f6971aa16122ad830689bf91e874b1121a7d986701fb8763a90ac5f1d91c98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77B3 10828 bytes

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