Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cf6b3532a34ac9e…

MALICIOUS

PDF

53.2 KB Created: 2020-09-01 16:18:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ab18daa80b04332b04ec495f6614a601 SHA-1: 2bd003e7620b9a2188da9d77b7f955015fffda27 SHA-256: 4cf6b3532a34ac9eef8a63c815268c68be855fca9d04af172785a3b7f9c8705a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to 'ttraff.com' which is flagged as a malicious redirector, specifically targeting 'southwest rapid rewards number format'. This indicates a phishing attempt to harvest user credentials or personal information related to the loyalty program. The PDF also hosts a large number of links to other PDFs on 'static.usrfiles.com', suggesting a link farm used for SEO poisoning or to distribute malicious content. No scripts were extracted from this sample.

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.com/pify?keyword=southwest+rapid+rewards+number+format In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/bf07b1_682793f2e87a41b6a69ef914fac7d481.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9b7d8a_b08e7870e22c4a038cbd55edc7145f82.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/dd4472_ce2db043f4dd4157815f36675b4ccfc9.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_293d7613a92c45e7a591d77c593d0adf.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a2d007_0fb334d8350b46f2bb42a1e89d395c6e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9801/3845/files/ravujotajutirejoge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6371/3690/files/gameloro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3080/6679/files/jizanolukagokapela.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0654/9406/files/54994868544.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_d14c48d4c1664a3da4a58274d6d36e87.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9c0842_7372356a1c0944cd960f25f78bad7f8e.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_9efea030c12f4ddcbf79c469a37b49f8.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e2f7e1_50a37178ff89479095d8b129696b209e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1673/0277/files/ronokadewufikawa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/7866/7688/files/84016580501.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6109/2247/files/lancelot_andrewes.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000788b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x788B 5584 bytes
SHA-256: e2829c27d6aaa53ea1d58c0b33fe18f3c10c4a3acc24f73e9bc5b6a7972f9e25
font_01_sfnt_off00008b68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B68 11104 bytes
SHA-256: a201a5417935a73b597691ac14465a8d662da9a91aa20e66103b6f2c5d34150f
font_02_sfnt_off0000b19b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB19B 16232 bytes
SHA-256: f260341e2deafef282c0cdf6f9547f7c1575836931e00f2cecf0e77490754097