Malicious PDF — malware analysis report

Static analysis result for SHA-256 02e6bc5ba2446316…

MALICIOUS

PDF

39.5 KB Created: 2020-08-29 17:42:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 155f56491d7cce5bf115e0b01a0957dc SHA-1: 5d69d6b55eb1e90c620d05d2bf142bec735dd4e0 SHA-256: 02e6bc5ba2446316219a1407ac07f77907cc6e03c11f2a10bc5c7d43a2753b02
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector infrastructure, indicating an attempt to lure users to harmful content. The document also embeds a large number of external PDF links, characteristic of SEO link farm tactics. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a malicious intent to redirect users, likely as part of a phishing or scam campaign.

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.ru/wix?keyword=50+secrets+de+volupt%25C3%25A9+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/7976/8995/files/63935017974.pdf
    • https://cdn.shopify.com/s/files/1/0431/1826/4469/files/46593434284.pdf
    • https://cdn.shopify.com/s/files/1/0437/0432/0154/files/paxefavorodovaxulobu.pdf
    • https://cdn.shopify.com/s/files/1/0437/0153/4875/files/69858917977.pdf
    • https://cdn.shopify.com/s/files/1/0430/4489/6925/files/lalerezesonolav.pdf
    • https://static.usrfiles.com/ugd/b8c837_7b359b70a38546b595ae3e3631734627.pdf
    • https://static.usrfiles.com/ugd/b8c837_39eeba0d4fee4244be935df4fb142883.pdf
    • https://static.usrfiles.com/ugd/b8c837_2c131cd4cbad45bc85f6eeee93fa6c88.pdf
    • https://static.usrfiles.com/ugd/ea9bdf_861c7c9953b14705a778b3dcff192595.pdf
    • https://static.usrfiles.com/ugd/b8c837_903caf40da2c4745b178f218f357d188.pdf
    • https://static.usrfiles.com/ugd/b8c837_6260d357c432450096ebd3881936e1a7.pdf
    • https://static.usrfiles.com/ugd/b8c837_870f38f1880f485db65ace1972aabca5.pdf
    • https://static.usrfiles.com/ugd/7f46b5_4f04cd16c46b43138ee1fce5e3ef6a1d.pdf
    • https://static.usrfiles.com/ugd/c7ef1a_7a78da4d6dec4b58b6ca0e493cda76b4.pdf
    • https://static.usrfiles.com/ugd/b8c837_7e08989398154764912b6592c21e8804.pdf
    • https://static.usrfiles.com/ugd/b8c837_09df1c41986148b692514e324df8a25e.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_off00005671.bin
36ceee3868f1e94ee2d6f7aa9e3b9a8f2f87735099718e55fbf562a0e1be3adf
pdf-font-stream PDF embedded font (sfnt) at offset 0x5671 5312 bytes
font_01_sfnt_off00006851.bin
ab18452b72dc4e614f4e99943287e77c405231c9c0328b2266eb58428532341b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6851 11964 bytes