Malicious PDF — malware analysis report

Static analysis result for SHA-256 f44c2ef6ed9e5f41…

MALICIOUS

PDF

42.3 KB Created: 2020-08-20 13:07:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aaa5596ac925d9719fc05c67c32275ed SHA-1: f5148cf13f6a1304a60e10767932559cc23e6a64 SHA-256: f44c2ef6ed9e5f415189c90b30c6244cb691735ed6979555b5d3ed4411db6054
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a free printable template. It also features a large number of embedded links, many pointing to Shopify, suggesting a link farm for SEO manipulation or traffic redirection. The presence of a download button lure further supports the malicious intent of redirecting users to potentially harmful content.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=free+printable+gallon+man+template
    • http://gopugi.powermoves.org/uploads/1/3/1/6/131606027/sagoxefowe-wetobon-bezufame-bowosuvemuxi.pdf
    • https://cdn.shopify.com/s/files/1/0432/5595/5613/files/39992987568.pdf
    • https://cdn.shopify.com/s/files/1/0440/7692/5078/files/creative_writing_curriculum_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/8575/8628/files/60783103964.pdf
    • https://cdn.shopify.com/s/files/1/0433/0268/2789/files/81560110693.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dadimutixiwukigojubiw.pdf
    • https://cdn.shopify.com/s/files/1/0434/1301/2636/files/how_to_make_instant_damage_potion.pdf
    • https://cdn.shopify.com/s/files/1/0430/4375/0039/files/kalnirnay_2020_calendar_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/3952/1958/files/20487901441.pdf
    • https://cdn.shopify.com/s/files/1/0437/5799/4138/files/72014461632.pdf
    • https://cdn.shopify.com/s/files/1/0431/5503/0170/files/mathematical_reasoning_for_elementary_teachers.pdf
    • https://cdn.shopify.com/s/files/1/0440/7299/2918/files/feloluriwodus.pdf
    • https://cdn.shopify.com/s/files/1/0427/3415/7991/files/76061526665.pdf
    • https://cdn.shopify.com/s/files/1/0430/8720/0418/files/lugudimidibovi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/56387133392.pdf
    • https://cdn.shopify.com/s/files/1/0437/2666/7925/files/chrysler_crossfire_srt6_performance.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_off000068b7.bin
f061cfa81ea31718d2276abae31d7053b80c1e768391dd411f6772aca9071b23
pdf-font-stream PDF embedded font (sfnt) at offset 0x68B7 5056 bytes
font_01_sfnt_off000079c9.bin
130d96500c16ab6500c885d28534f6cf8b70e7c5442ed6e0f17fc2e925002c94
pdf-font-stream PDF embedded font (sfnt) at offset 0x79C9 10060 bytes