Malicious PDF — malware analysis report

Static analysis result for SHA-256 94e2999ea8ac01bc…

MALICIOUS

PDF

65.9 KB Created: 2020-08-20 09:23:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6f55b48edf6f58f9b899ed9d2de832d0 SHA-1: 36d97c32db5f7890ae6974cd3bd490ad504e2a57 SHA-256: 94e2999ea8ac01bcdbb2538d65a17f0533422a10d56f9610126917b06efc22a5
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=lab+4+photosynthesis+answers'. The document body, though heavily obfuscated, contains text related to 'lab 4 photosynthesis answers', suggesting a lure. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm designed to distribute malicious content. No scripts were extracted from this sample.

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=lab+4+photosynthesis+answers In PDF document text
    • http://gukuba.heavydutymarketing.com/uploads/1/3/0/8/130814761/wejojivajesa-sorexamu-gujetuwotiki-nabekomiluwi.pdfIn PDF document text
    • http://files.wiast.org/uploads/1/3/2/8/132815882/533524.pdfIn PDF document text
    • http://files.carlya2zmusic.com/uploads/1/3/1/0/131070493/4360601.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/1/0428/5821/7631/files/76754606599.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0505/0008/files/causes_and_consequences_of_ww1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0577/1927/files/66971558279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2277/7496/files/79905444289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7589/5450/files/nidigexudidosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8051/4713/files/activation_energy_diagram_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8386/6018/files/47566522437.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9502/4033/files/83706110512.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3876/7266/files/75861435261.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

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c3c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3C1 5236 bytes
SHA-256: b3422a257d2482a4f7b070dece9ed6f0940a1a0172eb6f9503d6dda97a80c192
font_01_sfnt_off0000d5a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5A6 10952 bytes
SHA-256: bef52ff767fbe6b32ff3baf7db2ddf7c81c0997c67c43a062a3a167ee921a65f

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