Malicious PDF — malware analysis report

Static analysis result for SHA-256 84fca6c6d0e7a759…

MALICIOUS

PDF

50.2 KB Authoring application: Smallpdf Desktop First seen: 2020-09-24
MD5: cbf161854474cfcbd4bb89cea4380ed7 SHA-1: 0aacee19bc2834af2de63ab3e875f3590fd56008 SHA-256: 84fca6c6d0e7a7596a5e56f80aa6945f20d1239b302eada44885e59e1e2bf46d
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, identified as a link farm, suggesting a phishing or malware distribution campaign. The ClamAV detection and ML classifier further indicate malicious intent. While no scripts were explicitly extracted, the structure and URL patterns are consistent with a malicious PDF designed to lure users to external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://kinderdanceswfl.com/uploads/1/3/0/5/130588554/0c2b4732f2d.pdf In PDF document text
    • http://wafatelu.ekkohouse.ru/uploads/2020/01/29/bezezaxikugedisuw.pdfIn PDF document text
    • http://whitcombhomeinspections.com/uploads/1/3/0/3/130323407/renikisidagenutagix.pdfIn PDF document text
    • http://citizen-agency.com/uploads/1/3/0/4/130435757/fewivumedu.pdfIn PDF document text
    • http://newlaneboutiquelc.store/uploads/1/3/0/6/130639936/jeloze-lozak-xoxepopama-zufuzuxaramuj.pdfIn PDF document text
    • http://dry-2-go.com/uploads/1/3/0/5/130551639/delivobasefa-xulilinetejixez.pdfIn PDF document text
    • http://wof.codecollector.org/uploads/2020/01/29/kijilaponixum.pdfIn PDF document text
    • http://apologiesfrommen.com/uploads/1/3/0/6/130622120/fibowofe_runulugojadexit_fegagow.pdfIn PDF document text
    • http://newresume2019.com/uploads/1/3/0/6/130621015/2036722.pdfIn PDF document text
    • http://traderhsm.com/uploads/1/3/0/3/130312916/5785153.pdfIn PDF document text
    • http://cleaningservicesresidentialcommercial.com/uploads/1/3/0/6/130639603/xepexikagis.pdfIn PDF document text
    • http://shardexplorers.com/uploads/1/3/0/6/130603704/130603704.html#blindness+full+movieIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001324.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1324 8712 bytes
SHA-256: 051446fe037c2c808efc985c25d93777e52be2bc46b17531269bd235e5497342
font_01_sfnt_off00007adb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ADB 16992 bytes
SHA-256: b1fcf9f8c3dc078ca107b5753a8b1be59452058b5907d385fb3693ccdb0897e3

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