Malicious PDF — malware analysis report

Static analysis result for SHA-256 30a291e0b71b1744…

MALICIOUS

PDF

45.8 KB Created: 2020-08-23 02:05:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4bcf7ccd7a578760ab8ded3f6f2a06b5 SHA-1: 81cfca49fb71bb1d23fbc63eb26794f667c41fb4 SHA-256: 30a291e0b71b174422724f9825cd98cdda72c55e7ba83367a805d484ca75877d
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains multiple heuristics indicating malicious intent, including a link to a known malicious redirector and a large number of links to external PDFs, suggesting a link farm. The document body explicitly mentions 'Adblock plus for android review' and contains a URL pointing to a redirector, aligning with a social engineering lure to install malicious content or redirect to a phishing site. The presence of a link farm and a malicious redirector indicates a probable attempt to distribute malware or phish credentials.

Heuristics 5

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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=adblock+plus+for+android+review
    • http://mapajuxal.colorandlightpaintingworkshop.com/uploads/1/3/0/7/130738730/4936763.pdf
    • http://dupovo.spikemclarrity.com/uploads/1/3/0/7/130738948/muxujerimimenoga.pdf
    • http://files.naturescrossingstore.com/uploads/1/3/1/4/131407439/7355814.pdf
    • https://cdn.shopify.com/s/files/1/0433/2837/2904/files/metal_cutting_and_machine_tools_by_pakirappa_download.pdf
    • https://cdn.shopify.com/s/files/1/0444/8750/8135/files/accounting_for_management_sk_bhattacharya.pdf
    • https://cdn.shopify.com/s/files/1/0430/8179/3698/files/fisioterapia_para_hernia_de_disco_lumbar.pdf
    • https://cdn.shopify.com/s/files/1/0431/8491/4583/files/ielts_reading_passage_categorising_love_answers.pdf
    • https://cdn.shopify.com/s/files/1/0454/5609/7432/files/70645481249.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72707516801.pdf
    • https://cdn.shopify.com/s/files/1/0433/9515/4069/files/zizivap.pdf
    • https://cdn.shopify.com/s/files/1/0428/7732/1379/files/gefajifanavogafitimagula.pdf
    • https://cdn.shopify.com/s/files/1/0428/8099/1388/files/41895831195.pdf
    • https://cdn.shopify.com/s/files/1/0438/9502/9915/files/buninafaxofaxolonatedete.pdf
    • https://cdn.shopify.com/s/files/1/0432/6755/5481/files/94979035643.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_off000071fa.bin
145e001b983c587e7b50b82e07518da2029d169dbb94f9a0c80afa5c0c7317bf
pdf-font-stream PDF embedded font (sfnt) at offset 0x71FA 5496 bytes
font_01_sfnt_off000084c9.bin
d231909d8fa3531af17358eef142941e4b66a54a38bb6ef5c56507450964e216
pdf-font-stream PDF embedded font (sfnt) at offset 0x84C9 10980 bytes