Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e2e8ae3817e7ebf…

MALICIOUS

PDF

37.1 KB Created: 2020-08-08 22:51:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 26fa6c66155c547400c0cc90586ffde1 SHA-1: 0223d0c5a2e41bffa828533672ad11491acc67ad SHA-256: 2e2e8ae3817e7ebf7804fdbe046cd9e233434f57ee9a8ff935fe23e189dd96ff
154 Risk Score

Malware Insights

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

The PDF was flagged by a critical heuristic for containing a malicious redirector link, specifically 'https://ttraff.cc/pify?keyword=word+bingo+template+pdf'. Additionally, another critical heuristic identified a large PDF link farm, with many links pointing to cdn.shopify.com. The ML classifier also strongly indicated maliciousness. These findings suggest the document's primary purpose is to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=word+bingo+template+pdf
    • http://files.mauirealestateschool.com/uploads/1/3/1/1/131164556/e0681e38649cca.pdf
    • http://nakawul.cardifflymphoedemaandtherapies.com/uploads/1/3/0/8/130814297/dipovitotujufap-xefopokadakew-likupememu.pdf
    • http://files.forsythtavern.com/uploads/1/3/0/9/130969689/bofegota_vowubagid.pdf
    • http://files.tmwsports.co.uk/uploads/1/3/0/7/130775391/70cdf9a46db0a5.pdf
    • https://cdn.shopify.com/s/files/1/0433/3407/4523/files/lowugimerija.pdf
    • https://cdn.shopify.com/s/files/1/0434/0049/5260/files/7841889042.pdf
    • https://cdn.shopify.com/s/files/1/0433/8289/8840/files/29862781798.pdf
    • https://cdn.shopify.com/s/files/1/0434/7923/6760/files/pogazololon.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/44484222312.pdf
    • https://cdn.shopify.com/s/files/1/0433/4016/9366/files/wodapubavofakololutof.pdf
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/64862354006.pdf
    • https://cdn.shopify.com/s/files/1/0434/8254/6341/files/where_does_twitch_install_minecraft.pdf
    • https://cdn.shopify.com/s/files/1/0430/5115/5618/files/43825785256.pdf
    • https://cdn.shopify.com/s/files/1/0433/6700/6364/files/rakumik.pdf
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/jovefewogexob.pdf
    • https://cdn.shopify.com/s/files/1/0432/6113/2968/files/lojolov.pdf
    • https://cdn.shopify.com/s/files/1/0427/3173/3159/files/33898663021.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a37.bin
67baf1c13c1d6769f45f5db080b1ee070aa689a2e552662fef4ad346daae48dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A37 5124 bytes
font_01_sfnt_off00005b93.bin
6780a309d67d80ce29ba82eab40e76aa5961c7c975708606c37c34bb036f491d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B93 8700 bytes
font_02_sfnt_off0000794c.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x794C 4324 bytes

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