Malicious PDF — malware analysis report

Static analysis result for SHA-256 4030e84512e8a751…

MALICIOUS

PDF

48.7 KB Authoring application: Mobipocket Creator First seen: 2020-09-24
MD5: ef28690865b6e9fed73b287cc638f6ef SHA-1: f6591bbb5cdd0902ab62067cfd85afc734fac1e4 SHA-256: 4030e84512e8a751e03d77c193a8704401b56811e3860a669feb186086ac0d49
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files hosted on various domains, indicating a link farm or redirection strategy. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. No scripts were extracted, and the document body content is largely unreadable, but the heuristic firings clearly point to a malicious link-based attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • 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://lightscameracreate.com/uploads/1/3/0/6/130621447/b41d018250.pdf In PDF document text
    • http://stryienska.com/uploads/1/3/0/7/130739068/toxuleminegoboguvov.pdfIn PDF document text
    • http://crowdbrain.com/uploads/1/3/0/6/130639052/jirivarujesibem-perega-xerejux.pdfIn PDF document text
    • http://mta-sts.surfviewdna.com/uploads/1/3/0/7/130775309/kuvure.pdfIn PDF document text
    • http://estudio-uno.com/uploads/1/3/0/3/130313087/maxasitodugazufogi.pdfIn PDF document text
    • http://niamaacartistry.info/uploads/1/3/0/7/130774982/5035175.pdfIn PDF document text
    • http://wkrherefords.com/uploads/1/3/0/6/130639849/faruxinusinafuluvu.pdfIn PDF document text
    • http://www.procine.co/uploads/1/3/0/3/130323184/e19d5a.pdfIn PDF document text
    • http://moheal-moringa.com/uploads/1/3/0/6/130640091/mozixewobo_xubivugarezi_tatexipox.pdfIn PDF document text
    • http://fusiononlineservices.com/uploads/1/3/0/3/130379183/b2f4e4.pdfIn PDF document text
    • http://mail.lymphlight.com/uploads/1/3/0/6/130621310/3640707.pdfIn PDF document text
    • http://www.lchcs.com/uploads/1/3/0/2/130289690/pofuro.pdfIn PDF document text
    • http://yx4db.rhsdb.com/uploads/1/3/0/5/130589313/3191379.pdfIn PDF document text
    • http://redskinscheerleaderalumni.com/uploads/1/3/0/5/130588343/3905749.pdfIn PDF document text
    • http://mysmartinspection.com/uploads/1/3/0/6/130621293/88ffe57396ae.pdfIn PDF document text
    • http://www.g2-serve.com/uploads/1/3/0/4/130488395/gefadaxudut-tidelif-pipopidifusa.pdfIn PDF document text
    • http://coldwatercollections.com/uploads/1/3/0/7/130775865/naxenuruzikinej-wosumiladuditi-jatasipikid.pdfIn PDF document text
    • http://chivoremerald.org/uploads/1/3/0/7/130776747/6052056.pdfIn PDF document text
    • http://efrold4.brdge.org/uploads/1/3/0/2/130288317/130288317.html#advanced+reading+exercises+for+esl+studentsIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000053dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53DC 2604 bytes
SHA-256: 83d89f79375f7f339e88070a8779324ce221c94923bff415e388e162fbc46cfe
font_01_sfnt_off00005fc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC2 8480 bytes
SHA-256: 8697cc09be762139231883eea6327666cf93cdc5b55593bb5dce9c64ce6e71df