Malicious PDF — malware analysis report

Static analysis result for SHA-256 7205c495c8ea216a…

MALICIOUS

PDF

52.7 KB Created: 2020-09-09 11:48:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04721fca3c3e94f516cfc96f4db2bbae SHA-1: 35ff204aa4969c7c0997bbe6ce5eb76308f56d38 SHA-256: 7205c495c8ea216a3c70b9d9dfa31578b7e25b4cacda383468750644663dbc18
154 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a large number of external PDF links, suggesting it's part of a link farm or phishing campaign. The embedded URL `https://ttraff.me/pify?keyword=ckd+guidelines+summary` is identified as a malicious redirector, likely leading to a phishing page or malware download. The ML classifier strongly flagged this PDF as malicious.

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.me/pify?keyword=ckd+guidelines+summary
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/544c7e_7f86e59269c14a11b28c700683cc2af9.pdf
    • https://static.usrfiles.com/ugd/1c8c1e_42708c2526bd4f0e9e5cbce5392e4b24.pdf
    • https://static.usrfiles.com/ugd/418e76_ceb7c00557314179a6540c8b58652726.pdf
    • https://static.usrfiles.com/ugd/b8c837_da2133d936164a218f79a8d2f4a3d882.pdf
    • https://static.usrfiles.com/ugd/3225da_71f699a0fccd4e90856ecc8fb260cf21.pdf
    • https://static.usrfiles.com/ugd/07625c_d588a824526449a486f2a46b2219e664.pdf
    • https://static.usrfiles.com/ugd/38eac1_a7a807c741e844919ff927e56abb19f9.pdf
    • https://static.usrfiles.com/ugd/f84671_f7f712e36b074f64a1c079aca6d072d3.pdf
    • https://static.usrfiles.com/ugd/15d534_4ebd26c650bc484183efcaa7e4a0c645.pdf
    • https://static.usrfiles.com/ugd/b222ea_90b79623ed7347a78c0c5cdbd838a3f2.pdf
    • https://cdn.shopify.com/s/files/1/0435/6099/2927/files/vc_redistributable_2013_x86.pdf
    • https://cdn.shopify.com/s/files/1/0435/2419/4468/files/hayward_wisconsin_weather_report.pdf
    • https://cdn.shopify.com/s/files/1/0435/6499/0632/files/86543324423.pdf
    • https://cdn.shopify.com/s/files/1/0434/6046/0701/files/57276990394.pdf
    • https://cdn.shopify.com/s/files/1/0430/7976/2073/files/linkedin_share_url.pdf
    • https://cdn.shopify.com/s/files/1/0440/2587/2549/files/accounting_information_systems_romney.pdf
    • https://cdn.shopify.com/s/files/1/0429/2447/4531/files/damorukasininil.pdf
    • https://cdn.shopify.com/s/files/1/0429/9977/5381/files/12439877651.pdf
    • https://cdn.shopify.com/s/files/1/0431/6246/8503/files/abbyy_finescanner_apk.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_off000090fa.bin
f13cc18ac539e9350f806893ef749fda05c9e5d4a5697bfbb3908828f28441ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90FA 5216 bytes
font_01_sfnt_off0000a2a6.bin
e9ee8f56cca5fb0118342cd414c9d0882a300d9522ec5be41972361ae130b147		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA2A6 10144 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.