Malicious PDF — malware analysis report

Static analysis result for SHA-256 916659b196725c01…

MALICIOUS

PDF

42.3 KB Created: 2020-08-21 02:12:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01d07258002d6570c7129a72fa739deb SHA-1: 7d17da3b57207171fbb08dd96443b0e71e98abd9 SHA-256: 916659b196725c01aaa88593544282b124ab55faf560e600e9778c6f4ea79d63
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a heuristic identifying it as a PDF link farm. One of these links, 'https://ttraff.ru/pify?keyword=hearts+card+game++windows+xp', is flagged as a known malicious redirector. The presence of numerous links, many pointing to Shopify domains, suggests an attempt at SEO manipulation or a large-scale phishing campaign disguised as legitimate 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.ru/pify?keyword=hearts+card+game++windows+xp
    • http://zisafeza.jakyoga.com/uploads/1/3/2/6/132696056/sajaxitar_putibex_mazibogobavufu_fudapasemixa.pdf
    • http://files.centrallyesl.com/uploads/1/3/2/8/132815866/8376184.pdf
    • http://files.compressionsllc.com/uploads/1/3/1/6/131637325/miwukox_majevexowenewi_xolizijilaleru_rumezofato.pdf
    • http://bodulixem.psucusa.com/uploads/1/3/1/6/131606490/lokuxujimujujuta.pdf
    • https://cdn.shopify.com/s/files/1/0447/9234/8838/files/51176430232.pdf
    • https://cdn.shopify.com/s/files/1/0435/0777/7702/files/marti_c3_b1o_rivas.pdf
    • https://cdn.shopify.com/s/files/1/0427/7826/3718/files/kevoreronigi.pdf
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/believer_piano_sheet_music_free.pdf
    • https://cdn.shopify.com/s/files/1/0438/3014/9270/files/hotel_california_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0434/8418/4728/files/kasimexumameboguvalobaf.pdf
    • https://cdn.shopify.com/s/files/1/0438/4253/5581/files/28159042428.pdf
    • https://cdn.shopify.com/s/files/1/0433/9941/3921/files/minions_wallpaper_hd.pdf
    • https://cdn.shopify.com/s/files/1/0430/2520/3354/files/gakukixig.pdf
    • https://cdn.shopify.com/s/files/1/0433/7165/9414/files/date_range_picker_android_github.pdf
    • https://cdn.shopify.com/s/files/1/0435/1816/5144/files/kikufazefefakezerun.pdf
    • https://cdn.shopify.com/s/files/1/0428/2161/5783/files/nepunavutiwuta.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_off0000673b.bin
cbb1fe2f37364598820959b0fd86375b0cc56cda8d1a967d3390f89662343ad8
pdf-font-stream PDF embedded font (sfnt) at offset 0x673B 5484 bytes
font_01_sfnt_off000079dd.bin
cf65636935cb86775fe4a1114c1f409344059a30e0a46a3ee605be8ef38ed3a0
pdf-font-stream PDF embedded font (sfnt) at offset 0x79DD 10040 bytes