Malicious PDF — malware analysis report

Static analysis result for SHA-256 b00275fd7f8f4069…

MALICIOUS

PDF

42.8 KB Created: 2020-08-21 15:18:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0a6dc37661ab25435137857fd973a629 SHA-1: b7e600fa0d4ed610d4487d8e69030fd8ca68f086 SHA-256: b00275fd7f8f4069a6c860dc11807558e2df32916933b61090ed720d8950904b
128 Risk Score

Malware Insights

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

The PDF file contains a link to a redirector URL, which is a strong indicator of malicious intent. The document body, though partially corrupted, contains text related to 'Autocad 2013 full' and a URL that appears to be a lure for downloading software. The presence of a PDF link farm further suggests an attempt to distribute content or redirect users to malicious sites. The heuristic firings confirm the presence of a malicious redirector and a link farm.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/pify?keyword=autocad++2013+full
    • http://ruvevakef.kofc206.org/uploads/1/3/0/7/130775203/4926283.pdf
    • http://tuzorap.mrsmartinsthirdgrade.com/uploads/1/3/0/8/130814933/4207916.pdf
    • https://cdn.shopify.com/s/files/1/0438/0757/2130/files/c_diff_treatment_guidelines_2018.pdf
    • https://cdn.shopify.com/s/files/1/0431/4795/2294/files/adolescent_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0432/2482/6014/files/29700924558.pdf
    • https://cdn.shopify.com/s/files/1/0429/5753/7439/files/28524539017.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fadanamimurusekebunom.pdf
    • https://cdn.shopify.com/s/files/1/0462/4475/7664/files/51691883993.pdf
    • https://cdn.shopify.com/s/files/1/0428/8030/3270/files/fowiwekonosu.pdf
    • https://cdn.shopify.com/s/files/1/0450/8745/7432/files/cognitive_ability_test_for_students.pdf
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/tuwumelu.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_off0000690c.bin
ffa49b55d025abe44179d06c63fd412852c20f53b6cde7419b2f5ff446c675a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x690C 5220 bytes
font_01_sfnt_off00007ae8.bin
f8bd571ec2686901cc6188473480b7d749120c26c54d9756498c25636a87ff90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE8 10524 bytes

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