Malicious PDF — malware analysis report

Static analysis result for SHA-256 443b57dfec32acfb…

MALICIOUS

PDF

46.4 KB Created: 2020-08-24 10:18:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a6e9f36b2bef8fc137d41a54efd970be SHA-1: 8e05989148ec492b2635bf4fd331145d1d68d8bb SHA-256: 443b57dfec32acfbfeca2f77eabed5c8aa52775a916bb89d92073bee16913bdd
150 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 'ttraff.ru'. The document body, though partially corrupted, contains text related to 'Driver booster 6.6 crack', indicating a lure for pirated software. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify, likely for SEO manipulation to increase visibility of malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.ru/pify?keyword=driver+booster+6.+6+crack
    • http://files.bridgetutorial.net/uploads/1/3/1/3/131380445/tarevusijojapob.pdf
    • http://files.attitudeofservice.net/uploads/1/3/0/7/130775672/7472501.pdf
    • http://files.drmariannedunn.com/uploads/1/3/1/4/131406295/jogatunivutepawewi.pdf
    • http://files.ancientcraftstudio.com/uploads/1/3/1/3/131384721/6131454.pdf
    • http://napaluje.sieglindemcgee.com/uploads/1/3/1/4/131407836/teteworazebinu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3404/9703/files/fifokureveto.pdf
    • https://cdn.shopify.com/s/files/1/0460/8812/6628/files/janapada_geete_songs_kannada.pdf
    • https://cdn.shopify.com/s/files/1/0431/6046/9660/files/bachelor_s_degree_template.pdf
    • https://cdn.shopify.com/s/files/1/0436/9180/2777/files/27981214816.pdf
    • https://cdn.shopify.com/s/files/1/0430/4686/3005/files/3142319729.pdf
    • https://cdn.shopify.com/s/files/1/0432/2122/1533/files/salvar_tu_vida_alice_miller.pdf
    • https://cdn.shopify.com/s/files/1/0431/4490/4865/files/list_of_alloys.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wudogezemolajefenupil.pdf
    • https://cdn.shopify.com/s/files/1/0432/1555/2672/files/89665112047.pdf
    • https://cdn.shopify.com/s/files/1/0428/4183/3635/files/95479682925.pdf
    • https://cdn.shopify.com/s/files/1/0435/3196/0474/files/belur_math_aarti_song.pdf
    • https://cdn.shopify.com/s/files/1/0434/8251/3561/files/35506937054.pdf
    • https://cdn.shopify.com/s/files/1/0461/3868/7641/files/aircraft_structures_for_engineering_students_megson.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_off00006c4b.bin
55a8656230e8f8dc42943035c172b2c91be283f982608be8b85c51fc88e72f25
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C4B 5208 bytes
font_01_sfnt_off00007e23.bin
6febdc4666640ec3b9caea390afe0cb25064e176adb499fec4e0ab23ba74bd05
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E23 15300 bytes