Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbdc3b9053c6da46…

MALICIOUS

PDF

60.5 KB Created: 2020-08-27 14:07:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03fc97d92422a0b0571cfed5b0343f32 SHA-1: 7afbb0754b19b607c50663fe74a83291da886443 SHA-256: bbdc3b9053c6da46843374b818c7fc4781d967023f07522ec2c2e9991c0184e2
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm behavior, embedding numerous external links, many of which point to Shopify domains. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=mendelian+genetics+worksheet+answers', suggesting a lure to a malicious site disguised as educational content.

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.com/pify?keyword=mendelian+genetics+worksheet+answers
    • http://files.polygonall.com/uploads/1/3/1/4/131406735/pelajitufu-dewad.pdf
    • http://files.gappraisals.com/uploads/1/3/0/7/130739126/balowepolose.pdf
    • https://cdn.shopify.com/s/files/1/0437/3469/6097/files/carl_jung_analytical_psychology.pdf
    • https://cdn.shopify.com/s/files/1/0434/8067/8564/files/fumadekanuwer.pdf
    • https://cdn.shopify.com/s/files/1/0429/8804/4442/files/4263188579.pdf
    • https://cdn.shopify.com/s/files/1/0428/0611/6511/files/gefejitejako.pdf
    • https://cdn.shopify.com/s/files/1/0428/3400/2086/files/54933513804.pdf
    • https://cdn.shopify.com/s/files/1/0437/6988/8920/files/acupressure_potent_points.pdf
    • https://cdn.shopify.com/s/files/1/0431/6345/1560/files/xupuluz.pdf
    • https://cdn.shopify.com/s/files/1/0431/4172/6370/files/77273194077.pdf
    • https://cdn.shopify.com/s/files/1/0429/8155/6375/files/twilight_saga_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/4274/1143/files/qasida_burda_shareef_complete_with_urdu_translation.pdf
    • https://cdn.shopify.com/s/files/1/0431/3533/6616/files/iti_admission_form_2019_up_date_haryana.pdf
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/jofipokedupupexibijukil.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_off0000a453.bin
3b89a1333aa93e194de12c5c5da229a8f3a969ace6b07a90c5323b9ece6747ec
pdf-font-stream PDF embedded font (sfnt) at offset 0xA453 2828 bytes
font_01_sfnt_off0000ae4e.bin
38904add3ab467899f0494bf3d6dc7dc9d8e8ef9bf14d57a6b6335ce8f54c201
pdf-font-stream PDF embedded font (sfnt) at offset 0xAE4E 5364 bytes
font_02_sfnt_off0000c098.bin
33ed48ce6703307f1cc2c54fb5a4afb06f3e7a0532ae75bb89e097ff374742b8
pdf-font-stream PDF embedded font (sfnt) at offset 0xC098 9868 bytes