Malicious PDF — malware analysis report

Static analysis result for SHA-256 aae2dbc77c6743d1…

MALICIOUS

PDF

41.3 KB Created: 2020-08-04 19:47:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc48587cbad068b9994c11be9837ad51 SHA-1: 69c701e1ed4396ad3dd6a95e241fe9103618e939 SHA-256: aae2dbc77c6743d162853a239a92d5c06384a90c5033376643b28acc917264d1
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector at 'https://ttraff.com/pify?keyword=cefalotina+dosis+pediatrica+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The presence of many other links, including to Shopify domains, suggests a link farm or SEO poisoning tactic to increase visibility and lure victims. No scripts were extracted from this sample.

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=cefalotina+dosis+pediatrica+pdf
    • http://files.hudsonvalleybookdesign.com/uploads/1/3/1/3/131381605/vudetiwida_garovifu_ravegogigamu_damez.pdf
    • http://files.hikesdelmon.com/uploads/1/3/1/3/131380627/dowiso_sinuzusitaxolew_tikemonulosakuf_femoz.pdf
    • http://files.skateteamindy.com/uploads/1/3/2/6/132682051/kawefofotinarufukefe.pdf
    • http://files.martinkingmusic.com/uploads/1/3/2/6/132681556/leveguworoselowezej.pdf
    • http://files.nomaallim.com/uploads/1/3/0/9/130969992/fekipivozivevaluni.pdf
    • https://cdn.shopify.com/s/files/1/0436/2534/9273/files/61625670758.pdf
    • https://cdn.shopify.com/s/files/1/0434/1743/6312/files/42970641081.pdf
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/7713311872.pdf
    • https://cdn.shopify.com/s/files/1/0433/5036/0232/files/71830429182.pdf
    • https://cdn.shopify.com/s/files/1/0431/5316/2394/files/96928848858.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/danedogorolulefumatexa.pdf
    • https://cdn.shopify.com/s/files/1/0434/7238/8249/files/kuvaxadatolixixeriz.pdf
    • https://cdn.shopify.com/s/files/1/0433/2965/0856/files/xogef.pdf
    • https://cdn.shopify.com/s/files/1/0432/4678/0566/files/luvodod.pdf
    • https://cdn.shopify.com/s/files/1/0431/6689/2181/files/verexizositovenuninom.pdf
    • https://cdn.shopify.com/s/files/1/0427/8976/5276/files/tazufeweretogekasezat.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46676539889.pdf
    • https://cdn.shopify.com/s/files/1/0431/0843/4077/files/dumazobavuweru.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_off000064b4.bin
d234942fc7b6fac4114589f85b41581dfe836be3dae5d90e860306a1cb01934a
pdf-font-stream PDF embedded font (sfnt) at offset 0x64B4 5052 bytes
font_01_sfnt_off000075f7.bin
f1815379c6ff2457c639c2ddc2c15ac48b37db5cf4ce00cd4230dc106d858825
pdf-font-stream PDF embedded font (sfnt) at offset 0x75F7 10108 bytes