Malicious PDF — malware analysis report

Static analysis result for SHA-256 339cbed97faa2683…

MALICIOUS

PDF

41.0 KB Created: 2020-08-25 05:40:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bb898034edad738a2b632ec1a2b0338a SHA-1: 4fa619ca38198f770a531c753d9bbe54d1359c72 SHA-256: 339cbed97faa268336ce501eda2148042dce2ac10e6562ebb461b8ab0f077be3
202 Risk Score

Malware Insights

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

The PDF document contains a lure related to an admission form, which is a common social engineering tactic. It embeds numerous links, with one identified as a malicious redirector. The presence of a call-to-action button further supports the malicious intent of directing users to potentially harmful content.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=anambra+state+polytechnic+mgbakwu+admission+form In PDF document text
    • http://files.rickkurtisbooks.com/uploads/1/3/0/7/130775596/rupom.pdfIn PDF document text
    • http://tanir.jefferyedoherty.com/uploads/1/3/1/4/131438873/sajebowexolaxe.pdfIn PDF document text
    • http://laroti.havelsflowers.com/uploads/1/3/0/7/130774993/vurejevazuk-fusimosinitula-vosazejotiza.pdfIn PDF document text
    • http://files.lisafinn.net/uploads/1/3/1/8/131856491/1349948.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/1/0464/8425/8984/files/j_cole_middle_child_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7192/9496/files/lovigufodipax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6556/3549/files/ajarku_berdiam_chord.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/6466/7810/files/the_art_book_big_ideas_simply_explained_vk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1118/6588/files/binondo_food_wok_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/pdf_astronomy_for_dummies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5653/7495/files/45787202338.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7478/1338/files/redovamomavofowajoduguz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4570/7162/files/72979834344.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9429/3142/files/kesekesuwosunepuwisa.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 4

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_off00005fc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC8 5956 bytes
SHA-256: 24ba57742ce0000c94f3870b900dd043760deaf5728d0c630a48228d59ad75c0
font_01_sfnt_off000073ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73ED 10324 bytes
SHA-256: 01c302d5489d1bfeccb448230e6f090e3875bab51e79e4eaa3c56b8959ffbb05

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