Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6923fd3ee440749…

MALICIOUS

PDF

46.5 KB Created: 2020-08-09 16:43:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aed7ddfa0c3b3171909050f608da1228 SHA-1: a71415041ca6dc9c59e627ecd26ee600d522fcbd SHA-256: f6923fd3ee440749cd85927f1b87baa4568d086a8e5aa75ad205afe473d8f128
150 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many pointing to Shopify domains, but one critical link directs to 'ttraff.com', identified as a malicious redirector. This suggests a tactic of SEO poisoning or a phishing lure, aiming to redirect users to malicious content. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=barbara+cartland+libros+pdf
    • http://pituroner.themidnightstroll.com/uploads/1/3/0/7/130776485/d5ad9e5276b.pdf
    • http://files.dkgalphaalpha.org/uploads/1/3/0/8/130814246/lejesazezuloxeg.pdf
    • http://files.embracingspirit.net/uploads/1/3/0/7/130740221/mirinuv_kagawulif.pdf
    • https://cdn.shopify.com/s/files/1/0435/4700/0983/files/77748427494.pdf
    • https://cdn.shopify.com/s/files/1/0431/6646/6202/files/alfa_romeo_giulia_quadrifoglio_brochure.pdf
    • https://cdn.shopify.com/s/files/1/0433/8126/0440/files/ziguwid.pdf
    • https://cdn.shopify.com/s/files/1/0432/6037/9286/files/56577209009.pdf
    • https://cdn.shopify.com/s/files/1/0437/7742/5559/files/71510197533.pdf
    • https://cdn.shopify.com/s/files/1/0434/5544/7202/files/murolipodusesariwifosixum.pdf
    • https://cdn.shopify.com/s/files/1/0454/6635/3814/files/45775902903.pdf
    • https://cdn.shopify.com/s/files/1/0436/7273/1801/files/avian_pathology_atlas.pdf
    • https://cdn.shopify.com/s/files/1/0430/5122/1146/files/tivajakarivew.pdf
    • https://cdn.shopify.com/s/files/1/0429/3401/0015/files/40922058102.pdf
    • https://cdn.shopify.com/s/files/1/0433/9702/1861/files/43528999209.pdf
    • https://cdn.shopify.com/s/files/1/0430/3667/2162/files/xupogomuzozogegafija.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_off000077a1.bin
fa0c9b12790f0d8011020867826ad370b6ece532e2db1ad55bfd3dc8f4541c9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77A1 5336 bytes
font_01_sfnt_off000089ce.bin
ae2c82dd79ca7e6b869f42907a678166205e32891231bc66e7e0108fdfedfae3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89CE 10464 bytes

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