Malicious PDF — malware analysis report

Static analysis result for SHA-256 39fd09c620b8af6e…

MALICIOUS

PDF

42.6 KB Created: 2020-08-30 23:54:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42bb4f18b8aa666ca4dbf0162ca65895 SHA-1: bec62cb3d6723a70f3e61e006c27aead6ce21119 SHA-256: 39fd09c620b8af6eefdc2cb4dcbb07bd301ba51f0c874c055492b4569cef0834
140 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific malicious redirector URL, indicating an attempt to direct users to harmful content. The heuristic 'SE_CALLBACK_LURE' suggests a social engineering pretext, likely a scam or phishing attempt, to entice users to click the malicious link. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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.ru/wix?keyword=causas+y+consecuencias+de+la+reforma+protestante+yahoo
    • https://static.usrfiles.com/ugd/b8c837_83e7b438a15d4094861e66aa57458834.pdf
    • https://static.usrfiles.com/ugd/b8c837_f25449f8f3d245d2bead0c1867bef2d9.pdf
    • https://static.usrfiles.com/ugd/9ec29b_6d9affcf77b94d35871cb58366c4e0e7.pdf
    • https://cdn.shopify.com/s/files/1/0435/4641/1162/files/captivity_of_negativity.pdf
    • https://cdn.shopify.com/s/files/1/0434/9611/2294/files/sophos_free_antivirus_android_review.pdf
    • https://cdn.shopify.com/s/files/1/0429/5278/6074/files/wavelet_transform_theory.pdf
    • https://cdn.shopify.com/s/files/1/0432/4261/9035/files/xununudivaxosada.pdf
    • https://cdn.shopify.com/s/files/1/0435/9893/8274/files/uefa_champions_league_song_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0431/7465/8216/files/what_is_the_iphone_model_a.pdf
    • https://cdn.shopify.com/s/files/1/0446/9332/3929/files/29670117319.pdf
    • https://cdn.shopify.com/s/files/1/0430/9218/1153/files/96398288629.pdf
    • https://cdn.shopify.com/s/files/1/0438/4063/5042/files/tawimetojumowenojajuruv.pdf
    • https://cdn.shopify.com/s/files/1/0427/7560/9510/files/58651026178.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_off000063ac.bin
3b58cb12040765eb0e8cdbc9e328aa3b62e1c6d5d481ff6f604d946058b5b65c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63AC 5404 bytes
font_01_sfnt_off000075df.bin
ca46b69fd680561faff69e9c229d23c3e582357a64f928a852b59bcd3c03a075		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75DF 11564 bytes

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