Malicious PDF — malware analysis report

Static analysis result for SHA-256 299cf95024b0fe50…

MALICIOUS

PDF

91.6 KB Created: 2020-08-25 20:41:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00c07d95f566eed5ed75719da54d469e SHA-1: e1b4dc95114c9131dbd6bc0f09f8e52b90499a92 SHA-256: 299cf95024b0fe502d7c62c63f7e6d4708e3b3e3eecd8baaa030a607af0c68ca
150 Risk Score

Malware Insights

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

The PDF was flagged for containing a malicious redirector link and a large number of external PDF links, suggesting a link farm. The primary malicious URL identified is https://ttraff.cc/pify?keyword=enfermedades+y+trastornos+alimentici. The document body contains garbled text but includes the same malicious URL, reinforcing its role in a redirection scheme. The presence of numerous Shopify-hosted PDF links, while some are benign, indicates a tactic to obscure the malicious destination.

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.cc/pify?keyword=enfermedades+y+trastornos+alimentici
    • http://files.illinoisdelta.org/uploads/1/3/2/6/132681938/2186787.pdf
    • http://files.matchboxgreetings.com/uploads/1/3/1/8/131856987/gojapolizobufewes.pdf
    • http://merezajod.mathzaptutoring.com/uploads/1/3/1/4/131452883/godevevesodumisu.pdf
    • http://ligetilu.trkacupuncture.com/uploads/1/3/1/8/131856476/losonim.pdf
    • http://sujufar.ststephensbellevuehill.org/uploads/1/3/1/3/131380429/3a583.pdf
    • https://cdn.shopify.com/s/files/1/0438/7789/2251/files/16548909848.pdf
    • https://cdn.shopify.com/s/files/1/0429/1634/8057/files/diablo_2_soundtrack.pdf
    • https://cdn.shopify.com/s/files/1/0433/0340/3678/files/canon_print_service_android_apk.pdf
    • https://cdn.shopify.com/s/files/1/0437/0015/8629/files/popoletalu.pdf
    • https://cdn.shopify.com/s/files/1/0448/5156/0609/files/65154069065.pdf
    • https://cdn.shopify.com/s/files/1/0431/2930/7293/files/10619285591.pdf
    • https://cdn.shopify.com/s/files/1/0430/2556/3801/files/wutewuwar.pdf
    • https://cdn.shopify.com/s/files/1/0427/9389/4044/files/33858187443.pdf
    • https://cdn.shopify.com/s/files/1/0431/7691/9194/files/torejatuvupoxur.pdf
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/tebaturixolusiwumojokuka.pdf
    • https://cdn.shopify.com/s/files/1/0434/8873/9494/files/ribbon_in_the_sky_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0450/2755/7526/files/virulence_factors_of_acinetobacter_baumannii.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_off0001272a.bin
59deb0a1dab56fabf06febb8d38582eb9b05a55322089ea3d3636fca59ef3c94
pdf-font-stream PDF embedded font (sfnt) at offset 0x1272A 5224 bytes
font_01_sfnt_off000138df.bin
13b8415b5c6e9e6e794ad90526fc46687b37808dd894dd9d5e64e5ee8b0b8739
pdf-font-stream PDF embedded font (sfnt) at offset 0x138DF 11828 bytes