Malicious PDF — malware analysis report

Static analysis result for SHA-256 c894019a38b93399…

MALICIOUS

PDF

41.4 KB Created: 2020-05-23 13:46:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eb30bedf6feae1ae47f048e5c8697df9 SHA-1: c82ab53d364c6d40c9f065c991a8d0a1a4ed9b45 SHA-256: c894019a38b93399a45071962beba95a653a6600f430ad99633e315bcac86848
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious with high confidence. The document body contains a reference to 'How to use fitbit flex', which appears to be a lure to disguise the malicious nature of the links. The primary attack pattern involves directing users to a vast network of external URLs, likely for SEO spam or to host further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://baijialeminjiandafa.br3h.com/uploads/1/3/1/6/131607363/131607363.html#how+to+use+fitbit+flex
    • http://restaurantloansequipmentapps.com/uploads/1/3/0/4/130436224/979c76b7.pdf
    • http://quandocasei.com/uploads/1/3/0/4/130477468/kirapare_jifefizojamonew_ranemezejoxawam.pdf
    • http://thatswagmentalhealth.com/uploads/1/3/0/6/130621845/lujidug.pdf
    • http://thezapps.com/uploads/1/3/0/3/130323724/ee0889.pdf
    • http://potentialofman.com/uploads/1/3/0/7/130775744/6209738.pdf
    • http://textmimi.com/uploads/1/3/0/7/130776492/sijalop.pdf
    • http://briaoma.com/uploads/1/3/0/8/130873860/turamiluxupumupopi.pdf
    • http://ixylabs.com/uploads/1/3/0/8/130874222/gifejopevevexadedol.pdf
    • http://wiegerennadia.nl/uploads/1/3/1/3/131384765/9164055.pdf
    • http://ceticubatours.com/uploads/1/3/0/5/130550681/rovawowemubigovote.pdf
    • http://ourpleasureisland.com/uploads/1/3/0/3/130379841/banofopatomuf-lulisabe-tiduriva-ruzisokexik.pdf
    • http://jdbctax.com/uploads/1/3/0/6/130604780/36492481f.pdf
    • http://cbdplanetonline.com/uploads/1/3/0/8/130873740/wefadupukoxezosuk.pdf
    • http://creativbordum.com/uploads/1/3/0/5/130542965/9624fb0143b.pdf
    • http://outletcarts.com/uploads/1/3/0/6/130605504/e31f8e.pdf
    • http://trulookhomeinspections.com/uploads/1/3/0/7/130738994/dazirirexosukeb-gajuwowem-momoke-powuxorenuxagit.pdf
    • http://somniummortemmovie.com/uploads/1/3/1/3/131380146/wubalakavuvus.pdf
    • http://alvarezorganicfarms.org/uploads/1/3/0/6/130604789/vomimebitijol.pdf
    • http://thunga.in/uploads/1/3/0/9/130968926/6d3f64a71a78.pdf
    • http://skywaterediting.com/uploads/1/3/0/6/130605492/f8b741d12f.pdf
    • http://weddingdressesinboston.com/uploads/1/3/0/5/130539205/2154355.pdf
    • http://linktobeyond.com/uploads/1/3/0/5/130546415/wexezero-xamanatis.pdf
    • http://christieaariaemby.com/uploads/1/3/1/3/131398131/141741.pdf
    • http://buchetdeflori.net/uploads/1/3/1/0/131070044/00318f8ea.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000770f.bin
072828501b7c3151a08eea00638ec1df98df5e92fcaad8a9495c4f7cc8cc963b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x770F 10184 bytes

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