PDF malware analysis — malicious · 869ec4bf92c35d4d

MALICIOUS

PDF

39.7 KB Authoring application: Serif PagePlus

MD5: fab386b2f084622af02f32ad1794649e SHA-1: a32b5ef9b337e93b2662e7697db2595e98a24f3e SHA-256: 869ec4bf92c35d4dd45a0bc7c4bebb15f16899c8593d42cb37e758635932973f

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to redirect users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body, though heavily obfuscated, contains references to 'Cambridge english placement test b1', suggesting a lure to trick users into clicking the malicious links.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

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://autocambo.com/uploads/1/3/0/6/130622103/68e2864cf44bf84.pdf
- http://apartmrome.com/uploads/1/3/0/2/130291676/9877200.pdf
- http://independentowneroperator.com/uploads/1/3/0/6/130639965/kutipu.pdf
- http://louiseneaveportfolio.com/uploads/1/3/0/2/130289611/witig_kijabe_leroj.pdf
- http://tonypandytaxiservices.com/uploads/1/3/0/6/130604295/bapifedewuwelum.pdf
- http://mekdigitalmarketing.com/uploads/1/3/0/9/130968943/xusuzisobewu.pdf
- http://pioneerhealthandmissions.com/uploads/1/3/0/7/130738814/sasigumalijo.pdf
- http://judgeammendola.com/uploads/1/3/0/7/130775084/5791052.pdf
- http://teamrevolutionmi.com/uploads/1/3/0/7/130739330/4a2a37b.pdf
- http://nickmosca.com/uploads/1/3/0/5/130541000/xewenome.pdf
- http://landonfoundation.org/uploads/1/3/0/3/130323532/d62d4c1ed62c4f8.pdf
- http://thisisgood.org/uploads/1/3/0/6/130604803/xelapajupejefo.pdf
- http://biteables.com/uploads/1/3/0/8/130814407/tivenopubokubusibulu.pdf
- http://turningresin.com/uploads/1/3/0/8/130874175/gijebovowibomebu.pdf
- http://watsonstestsite.com/uploads/1/3/0/7/130776040/zopanot-nasoxedom.pdf
- http://www.petportraitsbyjanedolan.com/uploads/1/3/0/5/130541424/5968525.pdf
- http://adan.pt/uploads/1/3/0/2/130271187/8895625.pdf
- http://geminitrix.com/uploads/1/3/0/6/130620662/xinememotasu.pdf
- http://50staaten.de/uploads/1/3/0/4/130490117/9029984.pdf
- http://motorbikeglasses.com/uploads/1/3/0/2/130274088/powuweluka-zivumilezudopor-padule.pdf
- http://qualitymanagmentsytem101.com/uploads/1/3/0/6/130604109/mobudinutubus.pdf
- http://cabinet-replacement.com/uploads/1/3/0/4/130476322/9110440.pdf
- http://hotspringsre.com/uploads/1/3/0/5/130588659/eb90ba7.pdf
- http://carverarms.com/uploads/1/3/0/5/130551523/xofine.pdf
- http://host52.carmichaelnl.com/uploads/1/3/0/4/130483219/130483219.html#cambridge+english+placement+test+b1
- http://qualitymanagmentsytem101.com/uploads/1/3/0/6/13060410

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000219a.bin` `779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x219A	16036 bytes
`font_01_sfnt_off00003889.bin` `0b4c05c3c121982c230de301d2ca326482bde025308cc58eb9b4727da57c0409`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3889	7600 bytes

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