Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7ecf651d9773a8f…

MALICIOUS

PDF

43.7 KB Created: 2020-08-20 06:40:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a1651f7ead84f94e93c067ac4f2efcbd SHA-1: 02f376f43fdba7863a628cc945c762e857678b4d SHA-256: a7ecf651d9773a8f01777a707bc6ca75e49feecbd4efa0df52141cb142ffbd1c
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.001 Malicious Link

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text that suggests an urgency lure, such as 'account will be terminated'. The primary malicious URL identified is https://ttraff.com/pify?keyword=abbott+alinity+m+pdf, which likely serves as a gateway to further malicious content. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm intended for SEO poisoning or to obscure the final destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=abbott+alinity+m+pdf In PDF document text
    • http://guzex.behindnashville.com/uploads/1/3/0/8/130873987/gomokavimadusifisine.pdfIn PDF document text
    • http://files.lady-arlete.com/uploads/1/3/1/3/131380008/8231599.pdfIn PDF document text
    • http://files.ridecarousel.com/uploads/1/3/1/4/131438829/tumemeki.pdfIn PDF document text
    • http://files.topcamfilmservices.com/uploads/1/3/1/3/131398419/jipowajufexisex-derevo-nerexudinile-viludufoz.pdfIn PDF document text
    • http://kivev.geierbrainlab.com/uploads/1/3/0/9/130969723/vixoxikerape_xetuxe_falafigobujeton.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/1/0431/1321/8199/files/transistor_a1015_datasheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3341/9160/files/neoplasia_prostata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8072/6168/files/60385916363.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9628/6119/files/mass_incarceration_in_the_us.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5502/2234/files/burkitt_s_lymphoma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1341/2760/files/wiwiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/cell_and_molecular_biology_concepts_and_experiments_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7580/6119/files/4164719237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5083/5878/files/easy_chicken_fajitas_baking_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4827/1000/files/zororeradazulunuwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7541/9798/files/goxixaxid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6503/9261/files/3930701573.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_off00006a99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A99 5144 bytes
SHA-256: 689f62f0d889d95535cca795f4b83ab51409e7a173127eb114cf0df681eed6bf
font_01_sfnt_off00007c0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C0C 10580 bytes
SHA-256: 38a9c01b11b5857183549e62e621f38f123dc9d4db24c12e2615946d52c76931