Malicious PDF — malware analysis report

Static analysis result for SHA-256 74433d428f8ec339…

MALICIOUS

PDF

52.6 KB Created: 2020-08-14 03:55:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b5ff5913199696c209fb4250b4b60d87 SHA-1: 8355f095e1ff4414d8571da83bc39b632725372b SHA-256: 74433d428f8ec339111914e3a9dc87d559fad0a2994785da0e7d0189dc10b51b
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially corrupted, contains text related to a 'vehicle blackbox dvr installation guide' and includes the malicious URL, suggesting a lure to malicious content. The presence of many external PDF links, including benign ones, indicates a potential SEO link farm strategy to obscure the malicious intent.

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.ru/pify?keyword=vehicle+blackbox+dvr+installation+guide
    • http://files.bigskyhandmade.com/uploads/1/3/2/6/132682851/xoxunati-lugakekazilab-romawota-jidazem.pdf
    • http://bisazopi.gilmsp.com/uploads/1/3/0/8/130874422/190e34f1b8fe.pdf
    • http://files.intsangano.com/uploads/1/3/1/4/131483685/fojig.pdf
    • http://files.trilogywineclub.com/uploads/1/3/1/0/131071056/236c3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/0016/8597/files/wojabofudolulosado.pdf
    • https://cdn.shopify.com/s/files/1/0430/0885/2117/files/77002487127.pdf
    • https://cdn.shopify.com/s/files/1/0428/5969/2191/files/grade_12_chemistry_past_papers.pdf
    • https://cdn.shopify.com/s/files/1/0438/1822/1730/files/south_african_food_based_dietary_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0431/4680/5404/files/jorawupipa.pdf
    • https://cdn.shopify.com/s/files/1/0432/4989/3531/files/kubev.pdf
    • https://cdn.shopify.com/s/files/1/0430/8402/1921/files/face_shop_green_tea_sheet_mask_review.pdf
    • https://cdn.shopify.com/s/files/1/0433/3069/9414/files/11042518736.pdf
    • https://cdn.shopify.com/s/files/1/0430/0334/7097/files/10305657888.pdf
    • https://cdn.shopify.com/s/files/1/0431/6574/5314/files/47611869579.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000706b.bin
df1688e1f931d85d8092ca99bab53ab662d51260a49cfb33043fe8ed77064a0b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x706B 5500 bytes
font_01_sfnt_off0000831b.bin
41359dfb2b39f452014d648ddcb2bc83daa11de86e2046ad4c94c970c71538c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x831B 15956 bytes
font_02_sfnt_off0000ade0.bin
c9b9d40238817e9fd1c0b290bb100284b8f2d9dcc1188338581b9d27efa8fa30		 pdf-font-stream PDF embedded font (sfnt) at offset 0xADE0 16392 bytes

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