Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f07cece1170fc19…

MALICIOUS

PDF

46.0 KB Created: 2020-08-05 05:07:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d749146ea1b4dc286be2451601512b8 SHA-1: dbe10113c57b4e7b5690a3ba71b1ff754570984c SHA-256: 9f07cece1170fc1947c4dd1903b279f72dbd3a85aa2ca148431558b378d24715
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector at 'https://ttraff.ru/pify?keyword=dalwood+spelling+test+pdf'. This indicates a phishing or social engineering attempt to redirect the user to malicious content. The document body, though heavily obfuscated, contains references to the redirector URL and other Shopify-hosted PDF files, suggesting a link farm or content distribution strategy. No scripts were extracted, limiting the analysis of further execution chains.

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=dalwood+spelling+test+pdf
    • http://files.lanierspeechanddebate.org/uploads/1/3/1/4/131453406/rozinokedariwavu.pdf
    • http://files.halcyonimages.com.au/uploads/1/3/1/4/131453421/3572532.pdf
    • http://files.broadwaydanceeh.com/uploads/1/3/1/6/131636655/pozefupemamodebu.pdf
    • http://files.kathrynemyoung.com/uploads/1/3/1/0/131071076/porewuvofadaxa.pdf
    • http://files.demesstainedglass.com/uploads/1/3/1/4/131483719/gowes-kikikugabisari-fosuwopezo-jevugalawefo.pdf
    • https://cdn.shopify.com/s/files/1/0432/8180/9558/files/japakobefupomowapepa.pdf
    • https://cdn.shopify.com/s/files/1/0428/2492/5347/files/89426177330.pdf
    • https://cdn.shopify.com/s/files/1/0429/3266/6524/files/classical_mechanics_taylor_solution.pdf
    • https://cdn.shopify.com/s/files/1/0431/6200/9755/files/27848049205.pdf
    • https://cdn.shopify.com/s/files/1/0434/1760/0152/files/jubifek.pdf
    • https://cdn.shopify.com/s/files/1/0431/3707/3314/files/47988756096.pdf
    • https://cdn.shopify.com/s/files/1/0431/4451/1645/files/73320639257.pdf
    • https://cdn.shopify.com/s/files/1/0438/1474/8322/files/how_to_underline_on_discord.pdf
    • https://cdn.shopify.com/s/files/1/0433/7539/4979/files/50914188751.pdf
    • https://cdn.shopify.com/s/files/1/0427/6443/5612/files/93418495257.pdf
    • https://cdn.shopify.com/s/files/1/0440/5254/5701/files/basic_english_grammar_for_dummies_us_edition.pdf
    • https://cdn.shopify.com/s/files/1/0428/8462/8633/files/welafum.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/kivebosiwegajarumafogidux.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_off000074bd.bin
86e62bc90c3c814c15cc2a9b0d89c3711b701c391060f12635926456f501911e
pdf-font-stream PDF embedded font (sfnt) at offset 0x74BD 5204 bytes
font_01_sfnt_off000086a9.bin
35f5539da427770d301bb81b0da1862566154100351275c36abb706ccb44bc1f
pdf-font-stream PDF embedded font (sfnt) at offset 0x86A9 10628 bytes