Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b6b3a4c4439ca9c…

MALICIOUS

PDF

43.8 KB Created: 2020-08-23 02:17:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 409a517dead754053e3df26927105365 SHA-1: 871826f5336fc0c14c4ec94934aed48cdfb58377 SHA-256: 1b6b3a4c4439ca9cff6b78f5b3279bd4511ad58df62e3b938a38cfdb48aec5dc
128 Risk Score

Malware Insights

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

The PDF file contains a high number of embedded links, many of which point to a redirector service (ttraff.com) that is known to host malicious content. The document body also contains a call-to-action phrase and a direct link to a potentially unwanted application, suggesting a lure to download software. The presence of numerous external links, many hosted on Shopify, indicates a link farm strategy to improve search engine visibility for the malicious 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.com/pify?keyword=vidmate+apk++install+pc+free
    • http://files.schillingmediainc.com/uploads/1/3/1/4/131406075/8051944.pdf
    • http://kirar.spotlight-video.net/uploads/1/3/0/7/130739615/6052199.pdf
    • http://vekel.stfrancisabilene.com/uploads/1/3/0/7/130776049/kuzowipiw.pdf
    • http://tuwini.whiteterns.org/uploads/1/3/0/9/130969204/a40ba8ead.pdf
    • https://cdn.shopify.com/s/files/1/0430/9480/2593/files/32882523033.pdf
    • https://cdn.shopify.com/s/files/1/0429/5812/7270/files/sslc_physics_model_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/4940/9960/files/contoh_soal_siklus_akuntansi_perusahaan_jasa.pdf
    • https://cdn.shopify.com/s/files/1/0439/9969/0910/files/creative_writing_assignments_for_middle_school.pdf
    • https://cdn.shopify.com/s/files/1/0431/6348/4315/files/jokuvebol.pdf
    • https://cdn.shopify.com/s/files/1/0432/1578/2045/files/18816273818.pdf
    • https://cdn.shopify.com/s/files/1/0433/8185/0268/files/craftsman_air_compressor_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/2172/2015/files/pressure_vessel_design_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/riduzojivoxunum.pdf
    • https://cdn.shopify.com/s/files/1/0431/9074/7295/files/51061039967.pdf
    • https://cdn.shopify.com/s/files/1/0433/8309/5459/files/63773521509.pdf
    • https://cdn.shopify.com/s/files/1/0433/6356/5718/files/misapu.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_off00006cf8.bin
a09ca7619633d03c54ff87ee862cd7c02a0e769fe7ae2a04da00761382cea2eb
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CF8 5332 bytes
font_01_sfnt_off00007f03.bin
97f2a4ebcc11289ab3c540170dc418943cd70189095a1e2e00973f923c56e6de
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F03 10420 bytes