Malicious PDF — malware analysis report

Static analysis result for SHA-256 f625a022abdd9673…

MALICIOUS

PDF

80.0 KB Created: 2021-03-14 01:26:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 356815a8cdc3670a905e674037069e42 SHA-1: 553fbcee629c8c37d8a81dfbb4dd765a4e99847e SHA-256: f625a022abdd9673c3dabc9f51f9871d766073dbd688305be2a3b17c3c07b5f0
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to Weebly-hosted PDFs with numeric slugs, indicative of a link farm or SEO spam tactic. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and external links suggest it's designed to redirect users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 https://golowaki.ru/award?keyword=30+day+plank+and+squat+challenge+pdf
    • https://lasarowolu.weebly.com/uploads/1/3/6/0/136024073/fikamugapifuregoki.pdf
    • https://vosanodamenero.weebly.com/uploads/1/3/1/4/131438282/witiseluwibapudiw.pdf
    • https://limorevoxa.weebly.com/uploads/1/3/4/6/134611026/5448982.pdf
    • http://generalmassage.online/795459014296zbhv.pdf
    • https://xuxukiworizep.weebly.com/uploads/1/3/4/7/134723333/93e7ef549601b3d.pdf
    • http://galoomer.online/mepidebipoditajowisutaxor667n6.pdf
    • https://bigimegena.weebly.com/uploads/1/3/1/4/131438437/zovovaru_jukijefe_darefunotokudis_ruribuz.pdf
    • http://sivelural.mygamesonline.org/types_of_sacred_geometry.pdf
    • https://cdn.sqhk.co/mavixuwaloz/gg4w0jh/judaxopu.pdf
    • https://cdn.sqhk.co/doporaba/frijhbq/tuvusebobumab.pdf
    • https://jiwumakot.weebly.com/uploads/1/3/4/2/134235931/redaviku.pdf
    • https://cdn.sqhk.co/fudamozomeb/EicLiev/najikaraxalizavoza.pdf
    • http://itwomen.space/kolojixoxevavisoxojpl75.pdf
    • https://nulodikoz.weebly.com/uploads/1/3/2/7/132740439/folugonoparinitiro.pdf
    • http://waystep.site/action_3d_telugu_movie_video_songsx5vcc.pdf
    • https://depatimuxuzox.weebly.com/uploads/1/3/4/4/134404048/ligeze_fixojave.pdf
    • https://zabidikigez.weebly.com/uploads/1/3/4/5/134594795/8af185688b37e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://pusapovewazigu.onlinewebshop.net/how_to_use_the_ti_30x_iis_for_algebra.pdf
    • https://s3.amazonaws.com/telasebisu/benera.pdf
    • http://nabenejajoko.myartsonline.com/dillon_650_toolhead_stand.pdf
    • https://s3.amazonaws.com/natewared/alfonsina_y_el_mar_ariel_ramirez.pdf
    • http://teluroluxeterez.myartsonline.com/nibejopinudixexovikoxoma.pdf
    • https://s3.amazonaws.com/fewunadupop/solving_difficult_equations_with_fractions_worksheet.pdf
    • https://s3.amazonaws.com/tudawufed/wodasiwotiwabovagufax.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_off0000f873.bin
4800ddecbd860324e707d9e82d3c39bf6cd4c17f181f95b6b043a30c3917d0c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF873 5824 bytes
font_01_sfnt_off00010c53.bin
e441e7e5d805a664979bf6cbe14b83219fab01964a438335fa9a569a956978d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C53 10636 bytes

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