Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbb15bc0cb0eda97…

MALICIOUS

PDF

47.1 KB Created: 2020-08-07 21:16:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 13b0cee278c06c0a263be13dba4b8847 SHA-1: 61de95934bdb46de98dd9bc8d0cd1812e58ee6ac SHA-256: fbb15bc0cb0eda975fad100ce36adb2d1959537fff08b1c4458a16ae90c257c3
152 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of a link farm, embedding a large number of external links. A critical heuristic firing indicates that one of these links, 'https://ttraff.com/pify?keyword=my+autobiography+example+pdf', points to known malicious redirector infrastructure. The ML classifier also strongly flagged this PDF as malicious. The primary attack vector appears to be luring users into clicking these links, which likely lead to further malicious content or phishing pages.

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.com/pify?keyword=my+autobiography+example+pdf
    • http://files.ardenbuildingservices.com/uploads/1/3/1/0/131070124/xigidurove_zonapule_xamed_barebi.pdf
    • http://files.currereexchange.com/uploads/1/3/1/4/131407155/verabegikip-lexope-laxuwonutojupi-tatebadakefo.pdf
    • http://lenoxom.welcometoboobeebooisland.com/uploads/1/3/1/3/131398591/5956872.pdf
    • http://files.lochgoin.com/uploads/1/3/1/6/131607239/gutexal.pdf
    • https://cdn.shopify.com/s/files/1/0431/1629/8393/files/vozokiramawigoga.pdf
    • https://cdn.shopify.com/s/files/1/0432/5670/9273/files/naxofon.pdf
    • https://cdn.shopify.com/s/files/1/0433/4069/3662/files/m4a_to_m4r.pdf
    • https://cdn.shopify.com/s/files/1/0437/1618/2166/files/intoxicacion_por_aflatoxinas_en_bovinos.pdf
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/sumesajigutu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2583/3882/files/avl_tree_java_implementation.pdf
    • https://cdn.shopify.com/s/files/1/0436/4979/4213/files/tidavifafuzagujowoxu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/dezeletobiladexiwef.pdf
    • https://cdn.shopify.com/s/files/1/0430/3713/0914/files/zadetesabapuvodonuki.pdf
    • https://cdn.shopify.com/s/files/1/0433/6071/4904/files/41799709514.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_off00006894.bin
2ba6e0c4516ae528974428ab90d2fcb845e31fc6427c3681d976df34e50bf0fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6894 6568 bytes
font_01_sfnt_off000078e1.bin
668315ad317ed243a7673f823c70d7335808b94666b8f9662d5b87508368a508		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78E1 5592 bytes
font_02_sfnt_off00008bda.bin
3179b96a28bc5d4f145e18826410f9ef494e9464e6b95303bffd31687ca3777c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BDA 10380 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.