Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f0dc484ac494cf7…

MALICIOUS

PDF

86.8 KB Created: 2020-12-01 11:52:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: e30e5b6f885b7e81acc1124e33a2ef31 SHA-1: 197025c955a71224985f2f32559766929502e28c SHA-256: 0f0dc484ac494cf7e823873babc98e565f1151fcfabfefbfa9e6f7068cad9545
96 Risk Score

Malware Insights

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

The file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. An external URI pointing to 'trafficel.ru' was extracted, which is a strong indicator of a phishing or malware distribution attempt. No scripts were extracted, but the PDF structure itself contained the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • 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://trafficel.ru/aws?utm_term=grid+template+rows+repeat PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mawesenasijoser/vagevobowol.pdfIn PDF document text
    • https://s3.amazonaws.com/xasovewipeje/food_and_their_accompaniments.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfeb102bbd74065800e14d/t/5fc0eae961e25426e15997db/1606478569806/zapaloxufakemeraxe.pdfIn PDF document text
    • https://s3.amazonaws.com/sefukirexuwekij/24966716215.pdfIn PDF document text
    • https://s3.amazonaws.com/bodepova/inverse_function_solving.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc13b47c14dfd36fef3b64a/t/5fc2c2c861e25426e192de52/1606599368778/google_maps_poll.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc106a17848ba205d193829/t/5fc298324e98326c02651459/1606588468375/parchment_background_photoshop.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/polawujukilovikuponawudet.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/how_to_get_noticed_on_deviantart.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/zolamikomozokobem.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/west_shore_concert_band.pdfIn PDF document text
    • https://s3.amazonaws.com/nufidibodudulad/zivafinetimugojeranamuf.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001039a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1039A 6812 bytes
SHA-256: 2e0ee37cd64f4c35472631c058407906ad20f0781d2500579fe3f45af03c2431
font_01_sfnt_off000114d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114D1 5228 bytes
SHA-256: 4a7dc91189f21b8a934a39bd6e99263b8877c94a4e134c1495a01167b5b3cfad
font_02_sfnt_off00012695.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12695 12280 bytes
SHA-256: 232403cfbbaed480c8e0f663288d5edc055a3594362e0443b020470a65986630

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