Malicious PDF — malware analysis report

Static analysis result for SHA-256 8851563f6a3f396a…

MALICIOUS

PDF

33.8 KB Created: 2020-08-12 18:16:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1bfbab80b8819f7cfdf67f781dbea26b SHA-1: 1ab35439174e7e830c2988c2a06a6812e4eb1124 SHA-256: 8851563f6a3f396a8a9b6e46c49823d736a402793f84d6f3cc3091f4e9b6fa0d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, with a critical heuristic identifying a redirector to `https://ttraff.com/pify?keyword=springboard+algebra+2+pdf`. This URL is likely used to funnel victims to malicious content or phishing pages. The document body and embedded links suggest a lure to download or access educational material, which is a common tactic for malware distribution and phishing campaigns.

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=springboard+algebra+2+pdf In PDF document text
    • http://files.bullfrogandichingbeads.com/uploads/1/3/1/3/131381374/12d315796f8.pdfIn PDF document text
    • http://files.thesalvagesisters.net/uploads/1/3/0/8/130813846/5401d.pdfIn PDF document text
    • http://fejujivek.brandtmarineinc.com/uploads/1/3/0/7/130739615/4248737.pdfIn PDF document text
    • http://files.madisonbizreview.com/uploads/1/3/1/6/131637701/dikagi.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/1/0437/5832/1818/files/lodash_compare_objects.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2437/5194/files/89464183515.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7209/4362/files/cu_boulder_campus_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1547/0245/files/the_economist_2020_june.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9470/3270/files/dictation_exercises_for_english_learners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3430/3912/files/vesafelulanisus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6642/4486/files/70352574848.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6980/8548/files/49448509897.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9814/2875/files/a_room_of_one_s_own_themes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9862/8501/files/66335078475.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7175/7718/files/9258940519.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zijuk.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 8

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_off00004563.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4563 5404 bytes
SHA-256: d03f47da16b6b1f8602208aed5923631a6aaaf49f33ffc1f823517adb5ee249e
font_01_sfnt_off000057c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57C9 10196 bytes
SHA-256: 11ed85b353cfb14e7f6200c39227103055c909d6fce52c67a32aa581a5fc1c29

Open this report in the interactive analyzer, or submit your own file for analysis.