Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f7427671abf6bc8…

MALICIOUS

PDF

35.4 KB Created: 2020-05-18 20:26:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c6e54eb5a28c19462f0c1f3925124d9 SHA-1: 8ab9c7fd209f465c2ef6e78fd547153177050569 SHA-256: 8f7427671abf6bc8b504c9a7916656c5beabfc82370c09531806eb780ae77f22
92 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, a common technique for SEO spam and phishing. The document body, though partially corrupted, contains text related to 'free Android games' and URLs pointing to various domains, suggesting a lure to potentially malicious websites. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • 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
  • 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://sm-pipe.com/uploads/1/3/0/2/130287895/130287895.html#paral%25C4%25B1+oyunlar%25C4%25B1+bedava+indirme+android
    • http://t4wellness.com/uploads/1/3/0/8/130874623/lunabokovipef_zixevugimo_tibon.pdf
    • http://communityrestoration.net/uploads/1/3/0/7/130740015/3617728.pdf
    • http://keyinteriorsdesign.com/uploads/1/3/1/0/131071309/gazegebinixa.pdf
    • http://exolot-riba5.site/uploads/1/3/0/5/130544746/cbbf69a2.pdf
    • http://coachforachievement.org/uploads/1/3/0/7/130740221/kuxazisikudo.pdf
    • http://companyxchange.com/uploads/1/3/1/8/131856326/zitum.pdf
    • http://shinkanakokoro.com/uploads/1/3/0/4/130490808/f067edf181b44b.pdf
    • http://kajverbeek.info/uploads/1/3/1/3/131379384/diwenozotibedowexeko.pdf
    • http://aquatic16.fr/uploads/1/3/0/7/130740027/4717858.pdf
    • http://terrisuniquecollections.com/uploads/1/3/0/8/130873945/28dae152f8a6.pdf
    • http://realisticmaw.com/uploads/1/3/0/4/130475877/gomologariwez-rudirobapap.pdf
    • http://letipcm.com/uploads/1/3/0/7/130739328/wifot_redibalar_rudevegope_vupujek.pdf
    • http://lindlehomeinspections.com/uploads/1/3/0/6/130639317/businul_negejotomokesaj_guwin.pdf
    • http://ergtls.com/uploads/1/3/1/4/131438456/wuwerajanozexozenete.pdf
    • http://gfyworldwide.com/uploads/1/3/0/6/130620459/dixus_fananejipafi_fudejonefifu.pdf
    • http://cottonginmuseum.org/uploads/1/3/1/4/131453522/d44c3be9bfa272.pdf
    • http://the-business-solutions.com/uploads/1/3/0/6/130639467/a0777cbee4c.pdf
    • http://bavarian-royal.de/uploads/1/3/0/6/130620854/pagojupexin-gavifimipazufu.pdf
    • http://girlstogether.co/uploads/1/3/0/2/130291712/3891006.pdf
    • http://retailoriented.se/uploads/1/3/0/7/130739938/xoxon.pdf
    • http://perezmasonry-stonework.com/uploads/1/3/0/4/130483810/2334871.pdf
    • http://cynthiapetersen.com/uploads/1/3/0/5/130543656/1442185.pdf
    • http://jesus-festival.com/uploads/1/3/1/4/131483421/pojipipatodul.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_off00005c01.bin
e465aeb2a6d104a33e7c8d8d8cc50774bf913bd4a009038d90073336bc2952ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C01 11308 bytes

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