Malicious PDF — malware analysis report

Static analysis result for SHA-256 686d57fba350f6d1…

MALICIOUS

PDF

69.7 KB Created: 2020-08-24 19:12:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d270179ebb26823b56c3b254add916cc SHA-1: f33ca92f3dea91805c129c1803b8bd4c4fa06890 SHA-256: 686d57fba350f6d1be709538666fb2791db27878eba51ea531a512e7b3eae51f
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a redirector link to 'ttraff.cc'. This suggests the document is designed to redirect users to malicious infrastructure, likely for phishing or malware distribution. The presence of many external PDF links also indicates potential SEO manipulation tactics. No scripts were extracted, but the overall structure and link analysis strongly suggest a malicious intent.

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=ain%2527+t+your+mama+official+music+video In PDF document text
    • http://fabutirig.stoneslifecoaching.com/uploads/1/3/1/4/131454165/jozudel.pdfIn PDF document text
    • http://files.housefinchinvestors.com/uploads/1/3/2/6/132682787/relufat.pdfIn PDF document text
    • http://files.laura-lyman.com/uploads/1/3/1/4/131438216/9658395.pdfIn PDF document text
    • http://kowituk.reedcooper.net/uploads/1/3/1/0/131070718/dosekeweladajopu.pdfIn PDF document text
    • http://files.metalmeltdown.com/uploads/1/3/0/7/130775755/36f932b68a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9671/0047/files/statistical_quality_control_el_grant.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5977/1557/files/manual_audifonos_bluetooth_sony_wi_c300.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1283/2931/files/libro_actos_de_fe_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/5186/4484/files/zuwojuresomekiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4350/3783/files/janipotiduxalokono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4517/5971/files/microsoft_update_session.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6980/8548/files/16257764866.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9078/7996/files/60967792292.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7909/0855/files/zufupebulujovanexo.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_off0000b303.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB303 5352 bytes
SHA-256: 68f6a5931f37ff907be3e63d34b7ab635a06161d14bd8f5af55071a4e5c64361
font_01_sfnt_off0000c52d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC52D 11108 bytes
SHA-256: 0148d84b656a1f0616c8a9dfc9981021be64b5a52434d0c4c5e3042014de986b
font_02_sfnt_off0000ea04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA04 18776 bytes
SHA-256: 001d00114279cda904ec87ee5caf81ece5266ef333c342f0ca5ce216f4908131