Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbf081ae88235ef8…

MALICIOUS

PDF

45.6 KB Authoring application: Poppler-utils
MD5: 5cb3bda4b3ba61b5d5160a432e367372 SHA-1: 662eb71f87bf492e0498886b0a3d06b9548de636 SHA-256: fbf081ae88235ef88df713e7aeba2e1c970f846ff2882faf96b25cb019df3083
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Phishing:Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains a large number of embedded URLs pointing to external PDF files, a technique commonly used for phishing or distributing further malware. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' strongly suggests a phishing intent. The heuristic 'PDF_SEO_LINK_FARM' confirms the mass linking to external PDFs, with the dominant host being mfscjylctimr.weebly.com. No scripts were extracted from this sample.

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://mfscjylctimr.weebly.com/uploads/1/3/0/5/130541744/xukulok-zuramubus-xopewi.pdf
    • http://k-statebasketballplayers.net/uploads/1/3/0/6/130621458/dugoxenejilu.pdf
    • http://moksamassage.com/uploads/1/3/0/4/130477372/lemupekufodog.pdf
    • http://myaffiliatepages.net/uploads/1/3/0/4/130478520/bozotazof.pdf
    • https://guzotamiterif.weebly.com/uploads/1/3/0/5/130540118/ruravara.pdf
    • http://dcchosa.com/uploads/1/3/0/4/130435701/d4ee7cc9d2f5d9a.pdf
    • http://fon.lesnayazastava.ru/uploads/2020/01/27/sopowalikunoz.pdf
    • http://modernhomebuyers.us/uploads/1/3/0/4/130483751/vugozubozalu-mekitofujilu-gazukesenixu-sobevizigu.pdf
    • http://mitamasushi.com/uploads/1/3/0/5/130590719/1096829.pdf
    • http://nomo.finding-love.online/uploads/2020/01/29/tavuzujej.pdf
    • http://waterweeknorth.ca/uploads/1/3/0/5/130551630/9761791.pdf
    • http://marriagecelebranthilaryvaneldik.com/uploads/1/3/0/3/130313588/doxilapaguge_badit_wokesine_womib.pdf
    • http://whitnallwire.org/uploads/1/3/0/5/130588168/909821.pdf
    • http://nudazo.osbert11.com/uploads/2020/01/27/mineregag_vasafiru_regepiwetema.pdf
    • http://bis.ff14gg.top/uploads/2020/01/27/3966323.pdf
    • http://binaryforexbrokers.net/uploads/1/3/0/6/130620695/kezurotigiregevo.pdf
    • https://lutunadepomonij.weebly.com/uploads/1/3/0/4/130483515/4181101.pdf
    • http://partyplus613.ca/uploads/1/3/0/5/130588834/monoseluta.pdf
    • http://devinebookkeeping.net/uploads/1/3/0/3/130313854/matoviguxuw.pdf
    • http://nationalfootballcheerleadersalumni.org/uploads/1/3/0/3/130379105/130379105.html#rbi+guidelines+on+countercyclical+capital+buffer

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000017d2.bin
9d39dc9ec96e0090c0474e0639f933fdf69102b64855667dd7719b0f3c582168		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17D2 9212 bytes

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