Malicious PDF — malware analysis report

Static analysis result for SHA-256 185d0cba93b491ad…

MALICIOUS

PDF

38.2 KB Authoring application: pdf-parser
MD5: 02e6d2ae6f345b46c336bd8bff0f0c7c SHA-1: 5f4814363dc41cc14f22ffd82fbe06786e7aca78 SHA-256: 185d0cba93b491add53a2cb91381a7bec9d9839253fcb96fbd94157bb8682cd5
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, identified as a link farm, which is a common technique for distributing malicious content or leading users to phishing sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://cyclefitphysiotherapy.com/uploads/1/3/0/6/130639626/tadanelufeda.pdf
    • http://windowrestorationspecifications.com/uploads/1/3/0/4/130435785/xazerijotulitovu.pdf
    • http://tourismfieldlearning.com/uploads/1/3/0/6/130620840/kiremog.pdf
    • http://myaffiliatepages.org/uploads/1/3/0/6/130605376/milovaxixatul.pdf
    • http://polymergroup.net/uploads/1/3/0/6/130621720/9ce452850b000c.pdf
    • http://starfiregalactic.com/uploads/1/3/0/2/130289550/5245354.pdf
    • http://bestbrand2020.site/uploads/1/3/0/3/130379426/zopawiguzifemuje.pdf
    • http://www.paperrocksister.com/uploads/1/3/0/3/130313127/4398352.pdf
    • http://myersfamilyunified.com/uploads/1/3/0/6/130604259/milupelevimivuwadu.pdf
    • http://creativekidgardens.com/uploads/1/3/0/6/130604730/615873.pdf
    • http://www.deathbypowerpoint.com/uploads/1/3/0/6/130603900/nabinosagokozi.pdf
    • http://melaninvancouver.com/uploads/1/3/0/6/130639750/nisinozetijufa.pdf
    • http://holyfamilylearningcenter.com/uploads/1/3/0/2/130272629/kokit.pdf
    • http://honeymoonfunder.com/uploads/1/3/0/4/130476447/7207634.pdf
    • http://soundviewlimo.com/uploads/1/3/0/8/130814050/2da4e278554819b.pdf
    • http://outbound2.charisministries.org/uploads/1/3/0/4/130435843/funutolurexupaj.pdf
    • http://the-crafty-sagittarius.com/uploads/1/3/0/6/130620159/895354e2.pdf
    • http://learnabundance.com/uploads/1/3/0/6/130620679/zivanuvele.pdf
    • http://paulmelton.net/uploads/1/3/0/8/130874488/2358636.pdf
    • http://www.foxylooks.net/uploads/1/3/0/5/130590323/satazukisizujexu.pdf
    • http://spartanssouthlafc.org/uploads/1/3/0/5/130543064/4049961.pdf
    • http://74-123-73-74.mgwnet.com/uploads/1/3/0/7/130776205/130776205.html#stomach+ulcer+or+h+pylori

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000034eb.bin
835ca341fd000388c63cf300c2465b332bb29ae12081581c2e2da4cd8cf69166		 pdf-font-stream PDF embedded font (sfnt) at offset 0x34EB 7928 bytes

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