Malicious PDF — malware analysis report

Static analysis result for SHA-256 60037d7d8430cfc9…

MALICIOUS

PDF

78.2 KB Created: 2020-07-31 10:24:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 426204f8853144aeeb60c92e8472c770 SHA-1: 8a308b556fc1c68b7ea86c74543810d79054d255 SHA-256: 60037d7d8430cfc915e8eac75db67cd28220d747d49485c88a7f6a49f39a7616
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, with at least one pointing to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. This suggests the document is designed to lure users to malicious sites, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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 https://ttraff.com/pify?keyword=akselerasi+persalinan+pdf
    • http://files.kelseyjbowen.com/uploads/1/3/0/7/130776611/zufaladumokojemizozo.pdf
    • http://files.weareantioch.com/uploads/1/3/2/6/132696044/pupolarozimux.pdf
    • http://files.earthbasedhealing.org/uploads/1/3/1/4/131410479/9805275.pdf
    • http://files.nicholasvetricopywriter.com/uploads/1/3/1/4/131436956/b1a69ac5f7f541b.pdf
    • http://files.aloetteofnwva.com/uploads/1/3/0/7/130739387/guravuzup.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/2004/9822/files/98744242490.pdf
    • https://cdn.shopify.com/s/files/1/0431/7131/5876/files/sefotemube.pdf
    • https://cdn.shopify.com/s/files/1/0433/4285/6344/files/35929458318.pdf
    • https://cdn.shopify.com/s/files/1/0430/5911/8229/files/40614781731.pdf
    • https://cdn.shopify.com/s/files/1/0432/4956/5853/files/64574763570.pdf
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/seruj.pdf
    • https://cdn.shopify.com/s/files/1/0428/8151/5673/files/57807787274.pdf
    • https://cdn.shopify.com/s/files/1/0432/5769/2315/files/60550106765.pdf
    • https://cdn.shopify.com/s/files/1/0429/2768/5799/files/84575749167.pdf
    • https://cdn.shopify.com/s/files/1/0435/1596/9688/files/78976927332.pdf
    • https://cdn.shopify.com/s/files/1/0432/6365/6099/files/devafesixuzabenifufoxad.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eeba.bin
3cfc028ad7b725e66bc8f8e9ad6592dd4a285fcad59a770c0a4a8dfa06280551
pdf-font-stream PDF embedded font (sfnt) at offset 0xEEBA 4688 bytes
font_01_sfnt_off0000fe9b.bin
aca96be155ded29c64b1ad631f43e9ef497f0a28226d062fa9a2215b056f7d32
pdf-font-stream PDF embedded font (sfnt) at offset 0xFE9B 14180 bytes