Malicious PDF — malware analysis report

Static analysis result for SHA-256 abacfe07cfa52748…

MALICIOUS

PDF

37.1 KB Created: 2020-10-16 22:56:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80b711192240b16468e9b1ab29cc8f5e SHA-1: aee5511e796e95d1ea6ee52077aade7b07e07ba1 SHA-256: abacfe07cfa52748737019678a302ef43e5b1d5815bf3b40656156458bc872ad
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, disguised as an academic book, likely leads to a malicious site. The PDF also contains a link farm, suggesting an attempt to manipulate search engine results or distribute malicious links broadly. No scripts were extracted, limiting further analysis of payload delivery.

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.com/123?keyword=interchange+4th+edition+student+book+1+pdf
    • https://folukufisika.weebly.com/uploads/1/3/1/3/131384255/f047c8f82ee0.pdf
    • https://latenenagizogip.weebly.com/uploads/1/3/2/6/132696064/fibewobowu.pdf
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/ligewajinaxi.pdf
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/kadupe_ripovu_jozovagazemewe.pdf
    • https://cdn.shopif
    • https://uploads.strikinglycdn.com/files/c1907ecc-cbf7-4c69-8598-eb6bd1daad89/xadosikiwuxuvi.pdf
    • https://uploads.strikinglycdn.com/files/d51ad492-56b7-4283-bbba-3f108911a7dc/90488361425.pdf
    • https://uploads.strikinglycdn.com/files/ae69301d-15e6-4c13-8b13-2b7beb49c2a0/likarapeboro.pdf
    • https://uploads.strikinglycdn.com/files/59b5faf0-5c12-43fc-968f-86b19e429f12/daxusigevudarafesu.pdf
    • https://cdn.shopify.com/s/files/1/0437/4714/7925/files/giwefomini.pdf
    • https://cdn.shopify.com/s/files/1/0485/3320/9243/files/dexcom_g6_insertion_instructions.pdf
    • https://cdn.shopify.com/s/files/1/0498/7342/0455/files/labour_market_book.pdf
    • https://uploads.strikinglycdn.com/files/aef67ab1-fab6-4e4e-a22a-541778b6cd1e/25266664989.pdf
    • https://uploads.strikinglycdn.com/files/b1c1e5d0-b6e2-4908-b95c-53671f3084ec/xewenesadafafujusepizan.pdf
    • https://uploads.strikinglycdn.com/files/8af05898-ddb4-4b24-b20e-f2f2d16bb4c2/94960758559.pdf
    • https://uploads.strikinglycdn.com/files/96255a83-6bcf-45d4-a3e2-67d03fdfd4dd/pawitezeruxum.pdf
    • https://uploads.strikinglycdn.com/files/e81fec3c-59f0-42dd-902e-0b20224039fb/kedetuwutomujupofose.pdf
    • https://uploads.strikinglycdn.com/files/a3457a97-51d2-44d8-8034-784c338edddc/96515285667.pdf
    • https://uploads.strikinglycdn.com/files/640ba87c-9245-473a-879d-f2969a41488d/61026498078.pdf
    • https://cdn.shopify.com/s/files/1/0493/9949/6871/files/sirapusunopedul.pdf
    • https://cdn.shopify.com/s/files/1/0489/3016/0824/files/refulixub.pdf
    • https://cdn.shopify.com/s/files/1/0499/8361/9232/files/purabugekopan.pdf
    • https://cdn.shopify.com/s/files/1/0483/7992/0537/files/acl_mechanism_of_injury.pdf
    • https://cdn.shopify.com/s/files/1/0497/5155/6260/files/49025356143.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_off0000532e.bin
1c9b366e4795fb5e38c6868e95432b77c7c30cf4d2db83e7dcd67ae9d2e78a19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x532E 5664 bytes
font_01_sfnt_off0000666d.bin
333524ca66b58d3b0478e5f3d5ba3d7c4762e45fd7935a9b5d56691ce8b4534c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x666D 9536 bytes

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