Malicious PDF — malware analysis report

Static analysis result for SHA-256 b565edaf96ff9dec…

MALICIOUS

PDF

52.9 KB Created: 2020-07-28 09:47:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d5a728687ba9301def89e7b958ef4fc SHA-1: d9346f9559f0e49bb4298dfc5543adc505804ed3 SHA-256: b565edaf96ff9dece3e90afb6138859ff10c2cbf85ba2dc56514fc8be8b77fc1
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, with one heuristic specifically identifying it as a PDF link farm. The primary redirector URL, 'https://ttraff.ru/pify?keyword=java+version+in+android+studio', is flagged as malicious. This suggests the document's purpose is to lure users to malicious sites, likely for phishing or to download further malware. The presence of numerous Shopify-hosted PDFs further supports the link farm characteristic.

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=java+version+in+android+studio
    • http://files.howplannedgivingworks.com/uploads/1/3/1/1/131163859/bokoviz.pdf
    • http://files.passport2pain.org/uploads/1/3/2/6/132696483/vunedanupape.pdf
    • http://files.puntacana-restaurant.com/uploads/1/3/1/4/131406535/befoxew.pdf
    • http://files.2018.taiwanpianofestival.com/uploads/1/3/0/9/130969686/rufulenotezegu.pdf
    • http://files.mushroomsnaturallystl.com/uploads/1/3/0/8/130814052/virijakose.pdf
    • http://files.puntacana-restaurant.com/uploads/1/
    • https://cdn.shopify.com/s/files/1/0432/9567/0432/files/gisufuposof.pdf
    • https://cdn.shopify.com/s/files/1/0438/3699/7782/files/taneladejudujemuwe.pdf
    • https://cdn.shopify.com/s/files/1/0432/2168/0283/files/tolelomaladizoke.pdf
    • https://cdn.shopify.com/s/files/1/0430/7881/1810/files/jepilesifuwitajifi.pdf
    • https://cdn.shopify.com/s/files/1/0435/2288/3735/files/pagumasaw.pdf
    • https://cdn.shopify.com/s/files/1/0434/9945/4628/files/tezetalujerifewafufana.pdf
    • https://cdn.shopify.com/s/files/1/0437/2961/7057/files/fexesozefosopo.pdf
    • https://cdn.shopify.com/s/files/1/0435/8812/4830/files/kenepalovomu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4293/8784/files/xezokitejapogakosiwoj.pdf
    • https://cdn.shopify.com/s/files/1/0436/3993/1033/files/fetowalixofoxibetiduw.pdf
    • https://cdn.shopify.com/s/files/1/0432/4841/8973/files/fojilebepoji.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6849/files/15916113947.pdf
    • https://cdn.shopify.com/s/files/1/0429/8991/2218/files/3524845633.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_off0000927e.bin
30dc7b6dec26b33cf36cc29c02c3c9c6ad0a5f4c2901d3248bbbc069eac7c684
pdf-font-stream PDF embedded font (sfnt) at offset 0x927E 4720 bytes
font_01_sfnt_off0000a295.bin
fb6605ed5792858854d89c018ac0ed08a7c85a83da288333e515bccb9701786d
pdf-font-stream PDF embedded font (sfnt) at offset 0xA295 10444 bytes