Malicious PDF — malware analysis report

Static analysis result for SHA-256 dca6d55e30735ac6…

MALICIOUS

PDF

42.9 KB Created: 2020-08-12 19:36:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4381c47d22f8d9a144d5e1832e1c8d31 SHA-1: c88218b68cb3faee2ae156ac438fa18e849e01df SHA-256: dca6d55e30735ac687a70fcdc0e97387b869622e44f56b1832d07832a6b8a5c4
120 Risk Score

Malware Insights

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

The PDF contains a deceptive lure, presenting itself as a free download for a medical textbook. It embeds numerous links, including a primary redirector to `https://ttraff.com/pify?keyword=hematology+basic+principles+and+practice+7th+edition+pdf+free+download`, which is flagged as malicious. The document's structure and embedded links indicate a phishing or malware distribution attempt disguised as a content-sharing site.

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=hematology+basic+principles+and+practice+7th+edition+pdf+free+download
    • http://kepelesel.perfectpelvicfloor.com/uploads/1/3/0/7/130776485/8818247.pdf
    • http://najodiv.altheadesigns.com/uploads/1/3/0/8/130814921/620726.pdf
    • http://files.artarmonphysiotherapy.com.au/uploads/1/3/2/7/132740694/nomojiwixop.pdf
    • http://files.afmsupplements.com/uploads/1/3/2/3/132302815/972851.pdf
    • http://pexik.mystrugglemyvictory.com/uploads/1/3/1/4/131438541/92fd32496a8e7dc.pdf
    • https://cdn.shopify.com/s/files/1/0432/1997/6350/files/kowunuvedugudananetobona.pdf
    • https://cdn.shopify.com/s/files/1/0428/2574/4540/files/arabya_rajani_comics.pdf
    • https://cdn.shopify.com/s/files/1/0435/2252/3288/files/jexedikedokekelezotigasav.pdf
    • https://cdn.shopify.com/s/files/1/0427/8992/9116/files/23628682583.pdf
    • https://cdn.shopify.com/s/files/1/0433/5622/5688/files/85729348754.pdf
    • https://cdn.shopify.com/s/files/1/0432/2738/1920/files/rabubivozudikinowegikuwo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9685/1103/files/tusolasexaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/6245/1611/files/vojepemofeberafetitalot.pdf
    • https://cdn.shopify.com/s/files/1/0429/5606/2876/files/nidusipakowug.pdf
    • https://cdn.shopify.com/s/files/1/0432/2502/2621/files/19917799787.pdf
    • https://cdn.shopify.com/s/files/1/0434/8752/7078/files/51036693391.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_off000066c7.bin
4f7e34400e2681d396145e4da6320f3584fbf5fab536a88d4cf25a7656ecc9b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66C7 5944 bytes
font_01_sfnt_off00007aed.bin
0302bad0184101825b2244fbbbcdd0eba929a5e6d62c9524f88016448db73948		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AED 10284 bytes

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