Malicious PDF — malware analysis report

Static analysis result for SHA-256 840de4264ac0c3f6…

MALICIOUS

PDF

106.8 KB Created: 2020-08-06 11:50:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90246c061e0829708c12aa4b9e6639a9 SHA-1: 54111938789a64afbcd4c66ed015b70d242a4e9c SHA-256: 840de4264ac0c3f697fc35b574aa0a2bcfd487a24bf1c0f49dde181581d393a0
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify, likely for SEO manipulation to increase visibility of the malicious content.

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.com/pify?keyword=complex+problem+solving+techniques+pdf
    • http://sitatijiv.rhsglobalstudies.com/uploads/1/3/0/7/130776407/dukap-majibi.pdf
    • http://files.wisdomandwellness.us/uploads/1/3/2/6/132682119/5601922.pdf
    • http://files.tackandhorseoman.com/uploads/1/3/1/4/131407737/00e48a.pdf
    • http://files.thepottershousesandiego.com/uploads/1/3/1/1/131164039/6542141.pdf
    • http://files.evolutionmeetings.org/uploads/1/3/0/8/130874598/mafax.pdf
    • https://cdn.shopify.com/s/files/1/0433/7870/4536/files/98122891600.pdf
    • https://cdn.shopify.com/s/files/1/0438/7766/2875/files/43625056475.pdf
    • https://cdn.shopify.com/s/files/1/0433/3705/6414/files/49177169505.pdf
    • https://cdn.shopify.com/s/files/1/0430/3713/0914/files/10597546616.pdf
    • https://cdn.shopify.com/s/files/1/0435/9992/1315/files/gafaguwuduxamujuj.pdf
    • https://cdn.shopify.com/s/files/1/0431/4211/9592/files/merriam_webster_english_dictionary_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/4224/9631/files/gabiruxogunalopolumowut.pdf
    • https://cdn.shopify.com/s/files/1/0434/6550/6966/files/6110506975.pdf
    • https://cdn.shopify.com/s/files/1/0437/4321/5767/files/86797601530.pdf
    • https://cdn.shopify.com/s/files/1/0429/4865/7318/files/9429919873.pdf
    • https://cdn.shopify.com/s/files/1/0438/8713/2827/files/30-_30_150.pdf
    • https://cdn.shopify.com/s/files/1/0435/2383/4024/files/vuwujijukarejebesilejojub.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_off00015bab.bin
9ef4c89584cf3b1dc801d9848e5377db305d2c5b2a14bf03fe75f0e8145ae42e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15BAB 5656 bytes
font_01_sfnt_off00016eb3.bin
916fbea95cbf74d0ada994c10b87574e812297f11b30ccca5d32532cdf5f67b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16EB3 14876 bytes

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