Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e916becf7114e01…

MALICIOUS

PDF

37.7 KB Created: 2020-08-21 02:29:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e49578d47b6837e1eb4fdc1ba5aacb7f SHA-1: fe23d270522bceb13b5996e8ff8bb34f28cf0e7c SHA-256: 6e916becf7114e01a76cf28188daed901bdd13090ec711a93027a6dbae78314e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external resources, masquerading as free book downloads. One of these links, https://ttraff.com/pify?keyword=alexa+help+app, is identified as a malicious redirector. This suggests the document is designed to lead users to malicious infrastructure, likely for phishing or malware distribution. The presence of numerous SEO-optimized links further indicates a campaign to attract unsuspecting users.

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=alexa+help+app In PDF document text
    • http://files.boydenschoolpac.com/uploads/1/3/0/7/130775373/lozidodobitubarata.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/1/0428/7922/1927/files/abnormal_psychology_an_integrative_approach_8th_edition_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7987/6252/files/china_balance_of_payments_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2730/7423/files/university_physics_12th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3489/1672/files/memonowiwoxananonu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3275/6902/files/77809790425.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6803/1143/files/present_perfect_tense_vs_past_simple_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3151/8622/files/fajumutalif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6661/4175/files/bogufizazofaxolorobibe.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005706.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5706 4688 bytes
SHA-256: bfe4df98ce8efe410a284cdd24f9aef33039814739630020dd20b65655c8cb1d
font_01_sfnt_off000066f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66F7 10428 bytes
SHA-256: fad020c9aa07ec23881533ccc75cc5c77406c3471fcf04866e8110f7b19eb74a