Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea1fe944dceff318…

MALICIOUS

PDF

50.5 KB Created: 2020-08-22 03:39:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8fc70329a0df4d2658ef73f7a98319e3 SHA-1: 31c549c5836af8a17eecadc10cdfad1ebc289787 SHA-256: ea1fe944dceff31879dd253e484b076916e30d17ef39e24e3463bed6d7fe478a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=energy+content+of+fuels+lab+report+answers'. This URL is presented within the document body, suggesting a social engineering lure to trick the user into clicking it. The PDF also contains a link farm, indicating an attempt to manipulate search engine results or distribute multiple malicious links. The primary intent appears to be redirecting the user to a malicious site.

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=energy+content+of+fuels+lab+report+answers In PDF document text
    • http://files.sewchicinteriors.com/uploads/1/3/1/4/131438180/vodivulipukane.pdfIn PDF document text
    • http://files.missjordansclassroom.com/uploads/1/3/0/7/130776841/5406440.pdfIn PDF document text
    • http://files.mommatschis.com/uploads/1/3/1/0/131071063/96aadb3c4795c5.pdfIn PDF document text
    • http://negekusom.dckreider.com/uploads/1/3/1/4/131453247/6219290.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In 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/1/0432/6473/7433/files/32770780111.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7523/2153/files/autism_spectrum_disorder_review.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1775/6057/files/65358364284.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8056/4392/files/bevusudepe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6961/0907/files/92174649517.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4389/8022/files/wojetezojosiwuzupaxoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5072/9634/files/tag_transtorno_de_ansiedade_generalizada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5466/8705/files/core_java_interview_questions_for_2_years_experience.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5411/2672/files/54425188339.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/44329390643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2521/1296/files/sugoregagesugawilen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7680/5023/files/59687371483.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_off00007158.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7158 1664 bytes
SHA-256: 225bb5659721e06e623b07870843bc472387148658ae61c107a360e7bd04c5cd
font_01_sfnt_off0000794d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x794D 5472 bytes
SHA-256: 9233c7cdad3550da4cd3c18d01d5ec2d58139213d18f3555a1dac804fa255f96
font_02_sfnt_off00008c15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C15 15416 bytes
SHA-256: b794f6fc247898742b67932656d76feec7c6e4126af2fb536a2b36f50708908c