Malicious PDF — malware analysis report

Static analysis result for SHA-256 e16da235de405f3f…

MALICIOUS

PDF

41.1 KB Created: 2020-03-27 02:24:14 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 16d0f129bd35712ced52bae7d01d1de6 SHA-1: 33e4a0b9af71aac23c10b3a513e9bb3d7b04d8b1 SHA-256: e16da235de405f3f1b73d5989774f5b20667ff37e3fe8f06457f95e27d7ee6c9
94 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to other PDF files on similarly named domains, indicating a link farm or SEO spam operation. The document body text, though partially corrupted, includes 'Limpieza dental traduccion ingles' which likely serves as a lure to attract clicks to the embedded URLs. No scripts were extracted, and the primary malicious activity appears to be directing users to a network of potentially malicious or spam-related websites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://gmchamberpatrons.com/uploads/1/3/0/5/130544703/130544703.html#limpieza+dental+traduccion+ingles
    • http://shoppersdrycleaners.com/uploads/1/3/0/7/130738855/sawazat-jogawu.pdf
    • http://adventhopefellowship.org/uploads/1/3/0/7/130738641/647496.pdf
    • http://maureenseebastudios.com/uploads/1/3/0/5/130588983/93fea.pdf
    • http://www.rissmusicschool.com/uploads/1/3/0/4/130483733/gugujitif.pdf
    • http://waterdamageservicesct.com/uploads/1/3/0/4/130489023/meruder.pdf
    • http://amberbeuthien.com/uploads/1/3/0/6/130621596/241512.pdf
    • http://autumnleaffoundation.org/uploads/1/3/0/6/130604441/bebabobuvil.pdf
    • http://www.ultimate-fire.com/uploads/1/3/0/4/130435680/piselutipabop.pdf
    • http://mygreencirclerealty.com/uploads/1/3/0/8/130874530/4bc7f79aed035.pdf
    • http://thethorns.news/uploads/1/3/0/4/130483408/02bf90.pdf
    • http://mystudio500-woodfiredpottery.com/uploads/1/3/0/7/130775679/5bcf7.pdf
    • http://ideas.promo/uploads/1/3/0/4/130490053/beteda.pdf
    • http://compactbakery.com/uploads/1/3/0/8/130813877/5657380.pdf
    • http://gemalicious.co.uk/uploads/1/3/0/7/130739508/9a0778a05d.pdf
    • http://mail.tanyankee.org/uploads/1/3/0/6/130620609/58a5bb28.pdf
    • http://tarotofthehumanexperience.com/uploads/1/3/0/3/130379132/e7d609c33be.pdf
    • http://vegancenter.net/uploads/1/3/0/7/130739227/menawiridoni.pdf
    • http://ttbarraveiculos.com/uploads/1/3/0/7/130776684/872b589.pdf
    • http://venns.net/uploads/1/3/0/6/130604968/disuwan-sapibusa.pdf
    • http://dancingforjoybook.com/uploads/1/3/0/5/130543106/jekapusaguwevi-mubisu-reviborimofalog-kotebiki.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_off00007622.bin
0934f92b67463c5a4986c48cc66621dff60ffdabe80e5defabb396aea031c950		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7622 8480 bytes

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