Malicious PDF — malware analysis report

Static analysis result for SHA-256 79b6de3b50e5b431…

MALICIOUS

PDF

112.4 KB Created: 2020-08-07 21:14:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b53f2012692b1c0bb61aef36bae58a69 SHA-1: 14c99435ca05709b121738b9bab143b2eb1ec6ce SHA-256: 79b6de3b50e5b43177c769bd5c508248025565505b717e7dc4a2cd1f109ecf88
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to external PDF files, many hosted on Shopify, suggesting a link farm for SEO manipulation. One critical heuristic identified a link to a known malicious redirector at 'ttraff.com', which is likely the primary malicious objective. The document body itself is heavily obfuscated and contains the same redirector URL, indicating an attempt to disguise its malicious nature.

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=historia+del+cristianismo+en+espa%25C3%25B1a+pdf
    • http://files.partypatrolrental.com/uploads/1/3/1/8/131871701/kawewureguk.pdf
    • http://files.congioia.org/uploads/1/3/0/7/130740173/7669395.pdf
    • http://files.tastingtheheat.com/uploads/1/3/1/4/131438282/kabepog.pdf
    • http://files.royalglossbrat.com/uploads/1/3/1/4/131437044/maviw.pdf
    • http://files.sistersvillageinc.org/uploads/1/3/0/7/130776368/sesemopo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/2017/3983/files/rusosetavafagizulajogovir.pdf
    • https://cdn.shopify.com/s/files/1/0433/0727/0297/files/96361927853.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/doxufuvezemog.pdf
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/72211459569.pdf
    • https://cdn.shopify.com/s/files/1/0433/5340/7646/files/airspace_chart.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2119/files/patrick_rothfuss_the_doors_of_stone.pdf
    • https://cdn.shopify.com/s/files/1/0432/2613/6743/files/john_deere_d170_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/0963/8553/files/84078003321.pdf
    • https://cdn.shopify.com/s/files/1/0433/6392/6174/files/94234179442.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuxovozukirofavekejob.pdf
    • https://cdn.shopify.com/s/files/1/0434/0583/6444/files/ridotumirozewixatikapali.pdf
    • https://cdn.shopify.com/s/files/1/0438/4768/0162/files/xivetefigepuvut.pdf
    • https://cdn.shopify.com/s/files/1/0428/2328/6940/files/dewizodoborezuresulalowov.pdf
    • https://cdn.shopify.com/s/files/1/0427/8996/1884/files/faxudupafexeresopulaj.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016eb0.bin
23941884a72ee370196f27129afe208f0a89a02fa44ec385a3d1ea0dd1d18146		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16EB0 5476 bytes
font_01_sfnt_off000180f8.bin
c0b93893d22450de651a5f8e09d3fef62368327f29164d9a37eac67bdcf7a05c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x180F8 15888 bytes

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