Malicious PDF — malware analysis report

Static analysis result for SHA-256 5123d5019e0003aa…

MALICIOUS

PDF

46.2 KB Created: 2020-08-21 22:41:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 443b7014d4695963e988e6eb6381a682 SHA-1: e39534fe8bb11ab6de1f19027459889e49240fbb SHA-256: 5123d5019e0003aa0cda34a6b88feda000ecbb4e28d515faf922897d9dcead03
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=booster+cleaner+apps'. This URL is presented within the document body, suggesting a social engineering lure related to 'booster cleaner apps'. The PDF also contains a link farm heuristic, indicating a large number of external links, with the primary one being to a Shopify domain. The overall pattern suggests a phishing attempt to redirect users to malicious infrastructure.

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.cc/pify?keyword=booster+cleaner+apps
    • http://files.oakislandcompendium.ca/uploads/1/3/1/4/131405977/8ca9c0e3a9ad25f.pdf
    • http://files.speakeasyleather.com/uploads/1/3/1/4/131453031/jidaka-febugedujimusep-zuzuki-goboma.pdf
    • http://files.actg.org/uploads/1/3/2/6/132681611/nazedededibabuk_dofov.pdf
    • http://files.audioallure.com/uploads/1/3/1/1/131164402/lozexakuzetibi.pdf
    • https://cdn.shopify.com/s/files/1/0430/7140/6234/files/18547643181.pdf
    • https://cdn.shopify.com/s/files/1/0440/6195/0117/files/jexepeja.pdf
    • https://cdn.shopify.com/s/files/1/0434/3159/2102/files/722863182.pdf
    • https://cdn.shopify.com/s/files/1/0435/9657/8979/files/chronic_cough_in_child_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0434/1019/4582/files/accounting_and_finance_for_bankers_for_jaiib_examinations.pdf
    • https://cdn.shopify.com/s/files/1/0431/0079/9140/files/andrew_cardwell_rsi_course.pdf
    • https://cdn.shopify.com/s/files/1/0433/1415/1589/files/nugafumusavufazolif.pdf
    • https://cdn.shopify.com/s/files/1/0434/0622/9654/files/98434466691.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/sesadix.pdf
    • https://cdn.shopify.com/s/files/1/0432/6499/9590/files/xujanafalu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3861/3415/files/34605252422.pdf
    • https://cdn.shopify.com/s/files/1/0430/8451/3440/files/zilajatugilube.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_off000077d8.bin
feb8f49611e20a639f4f361dcb4e9e76b5abfa8348c2218e9a0a279aa5cc3f84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77D8 4976 bytes
font_01_sfnt_off000088d2.bin
e455071762837926d5b2cbbe50ca7cc64431eea155dc5496f904c31621c8431a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88D2 10208 bytes

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