Malicious PDF — malware analysis report

Static analysis result for SHA-256 3af3a2bd519c155c…

MALICIOUS

PDF

38.2 KB Created: 2020-08-16 19:00:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d85a0e4fe5a27036316416fb30b895f3 SHA-1: 3f48e5b7cf10880aaf983aa91057323c6a7fcaf7 SHA-256: 3af3a2bd519c155c70a8ec4efd6946750e7be4658b3144c3066eef60e174724e
194 Risk Score

Malware Insights

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

The PDF contains a lure document disguised as a 'Worksheet on conjunctions for grade 4'. It embeds multiple links, with a critical heuristic identifying a redirector link to 'ttraff.com'. This suggests the primary goal is to redirect the user to malicious infrastructure, likely to download and execute a secondary payload. The ML classifier strongly supports the malicious nature of this PDF.

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=worksheet+on+conjunctions+for+grade+4 In PDF document text
    • http://meromuba.katherinechwazik.com/uploads/1/3/1/0/131069934/38f37ad.pdfIn PDF document text
    • http://jinepi.ddrncboa.com/uploads/1/3/1/6/131607712/f3394fcb0c230.pdfIn PDF document text
    • http://pabomuxi.foe2051.com/uploads/1/3/0/7/130776394/keduvupuva_tavuvopaxobidev_xapesetu.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/1/0437/6245/0586/files/337637116.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15906675896.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7831/1326/files/geomorphology_book_by_savindra_singh_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8163/8812/files/5183625574.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6001/6790/files/22116529238.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8731/2536/files/alchemy_of_money_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6676/9051/files/mulomejonezivod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4184/1575/files/tudisukufavol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5837/3542/files/htx-_202_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/odisha_b._ed_question_paper_2020_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5005/7373/files/best_annotator_ipad_apple_pencil.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 1

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_off00005648.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5648 5492 bytes
SHA-256: 1e2612a6032e23e5c52ae05be45f3b98463a85711ea4c1901f5f828c886d14db
font_01_sfnt_off0000690f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x690F 10384 bytes
SHA-256: 0c77d27cf264c1f1209402d3089e37315861743a5deb737e0bd5cb07685cd22f

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