Malicious PDF — malware analysis report

Static analysis result for SHA-256 561298d032829d0f…

MALICIOUS

PDF

44.3 KB Created: 2020-08-14 06:51:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7993c0b1eb78d7c44f3e70ac7018c383 SHA-1: 1f7f0fe9d17f149ffd996b873e4cca64babfc76a SHA-256: 561298d032829d0f7e0692691509ca1801426a462ef13ffc91544daa9fdbee63
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is used to lure victims with a fake worksheet. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious intent. No scripts were extracted from this sample, but the presence of multiple links and the identified redirector strongly suggest a phishing or malware distribution attempt.

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=circle+area+circumference+worksheet+pdf
    • http://files.phineascbd.com/uploads/1/3/1/8/131872281/mobududuwid_vofid_nitovupiwegimev.pdf
    • http://xamexaxa.tsfabricator.com/uploads/1/3/2/3/132303382/7727283.pdf
    • http://niwulaza.painismyguru.com/uploads/1/3/2/6/132681260/fowutekusewis_vijirop_pasuzemevajumez.pdf
    • https://cdn.shopify.com/s/files/1/0433/0048/7332/files/vurawapa.pdf
    • https://cdn.shopify.com/s/files/1/0432/5172/8546/files/lafevewo.pdf
    • https://cdn.shopify.com/s/files/1/0428/3914/6662/files/84233188770.pdf
    • https://cdn.shopify.com/s/files/1/0432/1660/1249/files/13660015827.pdf
    • https://cdn.shopify.com/s/files/1/0432/7945/0272/files/buprenorfina_intratecal.pdf
    • https://cdn.shopify.com/s/files/1/0434/5253/0845/files/ludaxi.pdf
    • https://cdn.shopify.com/s/files/1/0433/3705/6414/files/20416699307.pdf
    • https://cdn.shopify.com/s/files/1/0434/7671/3637/files/zutipakilurogoneralavok.pdf
    • https://cdn.shopify.com/s/files/1/0431/5109/8007/files/69958586908.pdf
    • https://cdn.shopify.com/s/files/1/0437/8984/4631/files/xinugoki.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_off00006ec9.bin
b9fe5cfaece97af776015e60a2ea1562b139f0e6f3612c332eb31ab9a2ff2756		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EC9 5456 bytes
font_01_sfnt_off00008136.bin
d16c3a4537c69e09888c6d48db132d82576baee41eb82fac7eec76e82478361a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8136 10252 bytes

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