Malicious PDF — malware analysis report

Static analysis result for SHA-256 976da4abb3673050…

MALICIOUS

PDF

65.6 KB Created: 2020-08-25 17:33:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9858fe8c8f96bf1083c37d5054082a45 SHA-1: 7179d3c7bea663a11da658e02febe2cbaa6f9b74 SHA-256: 976da4abb3673050c9a290a35a69613a884302b81630a513a8880b2399aa0696
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a significant number of embedded links, with one heuristic specifically identifying it as a 'PDF SEO Link Farm'. The primary malicious link, 'https://ttraff.cc/pify?keyword=antenna+parameters+and+their+effects+pdf', is flagged as a malicious redirector. This suggests the document's purpose is to lure users through search engines and then redirect them to malicious content or phishing pages. No scripts were extracted, limiting the analysis of direct execution capabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.cc/pify?keyword=antenna+parameters+and+their+effects+pdf In PDF document text
    • http://xixamiz.c-nrl.com/uploads/1/3/1/4/131437502/petuvubokiladu.pdfIn PDF document text
    • http://files.allenhuang.org/uploads/1/3/1/3/131380052/5e13bdda91e1.pdfIn PDF document text
    • http://lijan.capitaljumpers.com/uploads/1/3/1/8/131871787/xenelimur_gixopunep_monaxuxiwed.pdfIn PDF document text
    • http://files.portlandmainemassage.net/uploads/1/3/1/8/131856995/lixajidavigamo-wutereta-zurepejobelur.pdfIn PDF document text
    • http://files.bethanylutheranrlf.com/uploads/1/3/1/3/131381819/sizumomonogup.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2553/8970/files/nekitere.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8153/9489/files/jafanawovu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6453/9798/files/python_bottle_template_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2164/6498/files/78971745528.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/11383010616.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1274/2550/files/40700940441.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4157/0459/files/pidovigapedizonakekivu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/16481260084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1500/1496/files/jijivomarosadoserunokujap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4607/4525/files/89564053560.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7088/1946/files/22394162669.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009414.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9414 5032 bytes
SHA-256: c3de73e46582763b61d9274f14016eae0bf7777dda3b98e4c1b5e66231269cf7
font_01_sfnt_off0000a4f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4F4 14820 bytes
SHA-256: 42e1bed3db78aa87d83d623b5fa927b9d6e9a21ec2ee0efe03d273672ddf5dbc
font_02_sfnt_off0000d516.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD516 16320 bytes
SHA-256: 13af90432f981cdf07d2fe7485c35c92b9d7264bbf1d6bcd6a939c2b2fbe7217
font_03_sfnt_off0000ead9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAD9 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3