Malicious PDF — malware analysis report

Static analysis result for SHA-256 e84a891b31d74846…

MALICIOUS

PDF

66.7 KB Authoring application: Inkscape First seen: 2020-09-24
MD5: 327c795e849b253b73679c29ac180708 SHA-1: 485555e635ffa103b7e8de31afc325d4d6d3c99d SHA-256: e84a891b31d74846e1ae50815f87daf1be51f235fc0d0b2f5a5ac97f9d01328f
192 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. The critical PDF_SEO_LINK_FARM heuristic fired, revealing a large number of embedded links to external PDF files, suggesting a link farm or distribution mechanism for further malicious content. The document body contains garbled text and references to medical topics, likely a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://kidztokidz.org/uploads/1/3/0/6/130639205/lekemenavetebarebuxi.pdf In PDF document text
    • http://gokarbon.org/uploads/1/3/0/6/130604373/9790961.pdfIn PDF document text
    • http://miraclevalleyceylon.com/uploads/1/3/0/7/130739828/rodixag_genoxepawotiri.pdfIn PDF document text
    • http://petcura.net/uploads/1/3/0/4/130490181/5104052.pdfIn PDF document text
    • http://northpacifictrainingperformanceinc.com/uploads/1/3/0/8/130814021/duvatitilopezosufoxo.pdfIn PDF document text
    • http://espacioparametrico.net/uploads/1/3/0/8/130814017/00fa68bb0c3.pdfIn PDF document text
    • http://anywheredogtraining.com/uploads/1/3/0/5/130546333/8641133.pdfIn PDF document text
    • http://itisvacation.com/uploads/1/3/0/3/130323603/6187312.pdfIn PDF document text
    • http://www.richmondgroup.org/uploads/1/3/0/7/130775521/d50b965c7ae70.pdfIn PDF document text
    • http://mindfulnesswelcome.com/uploads/1/3/0/6/130621959/8169959.pdfIn PDF document text
    • http://fiftycentfantasy.com/uploads/1/3/0/5/130588347/5472093.pdfIn PDF document text
    • http://confessionsofanonlinedater.com/uploads/1/3/0/4/130488580/tavudewodi-josasinunezugez-kimexutaxadi.pdfIn PDF document text
    • http://carlyberg.com/uploads/1/3/0/4/130483232/jesipakide.pdfIn PDF document text
    • http://celsosim.com/uploads/1/3/0/6/130605015/nazuvu.pdfIn PDF document text
    • http://miamipwcparts.com/uploads/1/3/0/7/130776230/jeligapi-jijarozu.pdfIn PDF document text
    • http://yogaandasianbodytherapy.com/uploads/1/3/0/6/130621701/130621701.html#advanced+glycation+end+products+and+diabetic+complications+a+general+overviewIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000147c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x147C 8352 bytes
SHA-256: 01e55a9eaf67247612bd84b1094bd6ada35ff17f88a3415b3f4856656d5a2042
font_01_sfnt_off0000b4e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4E6 16036 bytes
SHA-256: b3affdfdfee497c2d3230853582529cf395d265bfdbb8cde7d84ae9c33602211
font_02_sfnt_off0000c918.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC918 3220 bytes
SHA-256: 9f6b99e63b7e7beed57f4969773fe3d52a11f127d18cb05c28a4908abd5b1a87

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