Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d055b563ca2c243…

MALICIOUS

PDF

42.2 KB Created: 2020-08-30 03:48:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 908a9a0c2e4c72dd01a0cc5e8cdb66f2 SHA-1: 69385126551950db8479090310ebe920d39f85aa SHA-256: 1d055b563ca2c243e987888206443554457e949fa8b33e5bf5a0042ad5770c95
120 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to numerous Shopify-hosted PDFs, with one primary link leading to a malicious redirector at ttraff.ru. This suggests a phishing or SEO poisoning campaign designed to drive traffic to malicious infrastructure. The document body itself is heavily obfuscated but contains the primary malicious URL.

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.ru/wix?keyword=temario+de+jardineria+pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2791/files/benefits_of_effective_reading.pdf
    • https://cdn.shopify.com/s/files/1/0432/5549/6866/files/rutupukigelilona.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tovaje.pdf
    • https://cdn.shopify.com/s/files/1/0431/7180/7392/files/rabotiveketuk.pdf
    • https://cdn.shopify.com/s/files/1/0438/1851/6637/files/behen_hogi_teri_movie_song_pagal.pdf
    • https://cdn.shopify.com/s/files/1/0429/9508/9559/files/buxidewizuberigeb.pdf
    • https://cdn.shopify.com/s/files/1/0430/3772/0733/files/kudelomosuguwukiruzip.pdf
    • https://cdn.shopify.com/s/files/1/0438/9303/1080/files/fodisivaluxomiwas.pdf
    • https://cdn.shopify.com/s/files/1/0434/5243/2537/files/resistance_band_arm_workout.pdf
    • https://cdn.shopify.com/s/files/1/0431/2226/2178/files/1604808349.pdf
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/taxekozudubovexewomisixip.pdf
    • https://cdn.shopify.com/s/files/1/0445/3256/4132/files/fountas_and_pinnell_leveled_book_list.pdf
    • https://cdn.shopify.com/s/files/1/0429/9233/7059/files/36524053306.pdf
    • https://cdn.shopify.com/s/files/1/0440/6162/2437/files/learn_guitar_chords_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0427/9785/8972/files/matekixobefofomekogola.pdf
    • https://cdn.shopify.com/s/files/1/0431/9156/6493/files/fabrication_carton_ondul.pdf
    • https://cdn.shopify.com/s/files/1/0428/5097/5910/files/41045764942.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_off00006693.bin
212ce6cb7f99bd950a09c305faed8a08454d20a9d996f5282956c893d937880a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6693 5000 bytes
font_01_sfnt_off00007784.bin
acbae9f89874226195d7c68ef180a97fe0389453c7047055a8350bde371685c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7784 10568 bytes

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