Malicious PDF — malware analysis report

Static analysis result for SHA-256 d547888f187df70c…

MALICIOUS

PDF

45.2 KB Created: 2020-08-22 03:38:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94ae99101fea75c6c40fb33eb5a0d31c SHA-1: dbecbd3f3f3d44bad2233ea980c63614dbaf8428 SHA-256: d547888f187df70cb5b0fd68dcb6f346ed6850a2f003fff171d106b2d9d7f353
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'lab equipments and their uses pdf' and the malicious URL, suggesting a lure to a phishing or scam site. The presence of numerous links to Shopify-hosted PDFs, combined with the malicious redirector, indicates a link farm or SEO poisoning tactic to distribute malicious content.

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/pify?keyword=lab+equipments+and+their+uses+pdf
    • http://wozisod.studentprivacy.org/uploads/1/3/0/8/130874583/kededepafen_mujemotit_ginugimewog_putak.pdf
    • http://files.welcomeneighborpa.com/uploads/1/3/0/8/130874329/fetadi_memibela.pdf
    • http://files.mcclure-insurance.com/uploads/1/3/1/4/131407818/4702653.pdf
    • http://files.geoffsholler.com/uploads/1/3/1/6/131606668/df6ad0ee53.pdf
    • http://vexixo.iriscleaningservice.com/uploads/1/3/0/8/130874082/talonune.pdf
    • https://cdn.shopify.com/s/files/1/0438/4079/8885/files/lelixojowemamipopen.pdf
    • https://cdn.shopify.com/s/files/1/0432/6254/1982/files/fumorajuwixi.pdf
    • https://cdn.shopify.com/s/files/1/0432/1692/8923/files/bear_whitetail_hunter_manual.pdf
    • https://cdn.shopify.com/s/files/1/0441/2473/3592/files/79997331565.pdf
    • https://cdn.shopify.com/s/files/1/0430/0469/0581/files/xedodisalitogokupokup.pdf
    • https://cdn.shopify.com/s/files/1/0437/7313/2957/files/cambridge_business_english_activities_vk.pdf
    • https://cdn.shopify.com/s/files/1/0435/8746/9469/files/psychometric_test_sample_questions.pdf
    • https://cdn.shopify.com/s/files/1/0432/0129/8594/files/barcode_scanner_fr_android_tablet.pdf
    • https://cdn.shopify.com/s/files/1/0432/2977/3982/files/83589013255.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/
    • https://cdn.shopify.com/s/files/1/0437/7313/2957/file

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007285.bin
7f6213b55f3f418447385c1b6267bdb6244b94aa51d8ed37852bc329a95e4494		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7285 5456 bytes
font_01_sfnt_off000084de.bin
10ff0010054ba27e2c2a08cfd095ad752ee0a341d128546505cc2c0c85016531		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84DE 10244 bytes

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