Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f32c16df461393e…

MALICIOUS

PDF

49.8 KB Authoring application: Pdftk
MD5: df5684498110da0f50c5983ee09eabfd SHA-1: 68684af0361fc8ecc070ffd1c834fa438fc2ce02 SHA-256: 7f32c16df461393e960bea7ea7aa65511dd4439fdf92d8b3eb4121b53a97d55c
152 Risk Score

Malware Insights

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

The PDF document was flagged by multiple heuristics, including a critical finding for a 'PDF_SEO_LINK_FARM' indicating a large number of external links. The ML classifier also assigned a high probability of maliciousness. The embedded URLs, predominantly pointing to PDF files on various domains, suggest a phishing or malware distribution campaign. The document body contains fragmented text related to Siri shortcuts and Apple products, which may serve as a lure.

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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://montevistacalvarybaptist.org/uploads/1/3/0/2/130272636/fezagadejoz.pdf
    • http://kibasu.zphoto.pro/uploads/2020/01/28/8570156.pdf
    • https://jozikufu.weebly.com/uploads/1/3/0/3/130379465/vopuwika.pdf
    • http://befullerthanlife.com/uploads/1/3/0/5/130588263/jekabitufudusus.pdf
    • http://update-accounts.net/uploads/2020/01/28/gubebobodaxukereri.pdf
    • http://natixokapu.hayatimbirfilm.com/uploads/2020/01/28/33d537.pdf
    • http://kedenozi.vipiska-egrn-besplatno.icu/uploads/2020/01/27/tawifige_nulutojutapuzum.pdf
    • http://makeitworkwellness.com/uploads/1/3/0/5/130590139/vajesip.pdf
    • http://isatour.pt/uploads/1/3/0/6/130604207/sasagibuwajotuxizus.pdf
    • https://logazitutepum.weebly.com/uploads/1/3/0/4/130435659/jetupara_sukobuvesi.pdf
    • http://kagez.visitbilyarsk.ru/uploads/2020/01/28/xojimodev-robavuxikukumef.pdf
    • https://selatefob.weebly.com/uploads/1/3/0/2/130291441/laxakuwozavimevumil.pdf
    • https://nugojorazum.weebly.com/uploads/1/3/0/5/130551192/4948896.pdf
    • http://kat.missellieganza.com/uploads/2020/01/29/daraz-rubisevudibon.pdf
    • https://dokolowobepofen.weebly.com/uploads/1/3/0/5/130543364/zawexujede.pdf
    • http://malal.ksptambov.ru/uploads/2020/01/28/5a4c3.pdf
    • http://assetskill.com/uploads/1/3/0/5/130539287/2216031.pdf
    • http://andrewmalcolmphotography.com/uploads/1/3/0/4/130483626/8732210.pdf
    • http://danfodiolaw.com/uploads/1/3/0/6/130604710/8597558.pdf
    • http://cardesign.su/uploads/2020/01/28/2b3868043053aa.pdf
    • http://wilizen.tamadanataly.ru/uploads/2020/01/27/8251319.pdf
    • http://gapoferiz.serviicosbr.com/uploads/2020/01/28/ea3521b.pdf
    • http://evokefitness.net/uploads/1/3/0/5/130551714/130551714.html#siri+shortcuts+ios+13

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000167b.bin
5f5420758f8a8737b3643ffed7518b09f7db6679f8cfa749e3ce4b4805653325		 pdf-font-stream PDF embedded font (sfnt) at offset 0x167B 8092 bytes
font_01_sfnt_off000074f9.bin
0a19d3ec01c2bd5f2da2e654894ff9caac3df97291af1acb5ff150be3e6b34cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74F9 18100 bytes

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