Malicious PDF — malware analysis report

Static analysis result for SHA-256 e704c9e143fa5cca…

MALICIOUS

PDF

50.7 KB Created: 2020-08-21 20:25:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: be5deb1075ce827d4ec3e9c4e03180bc SHA-1: ea4c773e5006788cf2f3b88e714b785b5582d6a6 SHA-256: e704c9e143fa5ccaf96e167b932af82eb8d4dd532907c0d29fc977e8f498133e
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including a critical redirector link to 'ttraff.ru' disguised as a free agenda planner. This is further supported by a PDF link farm heuristic, indicating a large number of outbound links. The ML classifier also strongly flagged this PDF as malicious. The primary attack vector appears to be social engineering through deceptive links within the document.

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.ru/pify?keyword=agenda+planner+2019++gratis In PDF document text
    • http://files.prestigeservicesleeds.co.uk/uploads/1/3/2/7/132712358/5599d60654e.pdfIn PDF document text
    • http://files.brewerfirstrobotics.com/uploads/1/3/2/6/132681558/gitulebe.pdfIn PDF document text
    • http://juvanago.exploredreamdiscover.ca/uploads/1/3/0/8/130873822/316693.pdfIn PDF document text
    • http://soxifowu.allisonfutterman.com/uploads/1/3/0/7/130740440/lajeloruzesapegen.pdfIn PDF document text
    • http://files.jessejsanchez.com/uploads/1/3/1/3/131379183/nibuzinarotime_wopixigona.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/1/0429/0550/1852/files/networking_essentials_checkpoint_exam_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8548/7516/files/how_to_run_exe_on_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4903/2607/files/muscle_workout_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4340/4441/files/butoxewawizabuwuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/27360052690.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8857/6661/files/difference_between_static_and_dynamic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7695/1957/files/6656980690.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5546/4104/files/43723657324.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5427/5479/files/obligation_modal_verbs_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0928/5024/files/android_update_version_7._0.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6579/4965/files/89813693006.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3441/8075/files/vamanapukifajuzidatadodop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3330/4986/files/76368654346.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/laporan_kasus_hernia_inguinalis_lateralis.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000079a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79A6 5596 bytes
SHA-256: 403ab88e3ba2192003b89f2e03926a67cd91425f2fd5ce28b330c08367802158
font_01_sfnt_off00008cb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CB5 2884 bytes
SHA-256: 86fb883695d8aa7493cb1939c48e75d2d3ece814ac3f2473cb3936fb081ed28d
font_02_sfnt_off00009874.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9874 10944 bytes
SHA-256: 6537b5ba09292b1194e1ab70f15316f08ad8c3e318d9b10cfa4e461ff1c8c317