Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac732f0d62c9ef22…

MALICIOUS

PDF

39.0 KB Created: 2020-08-19 20:19:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 63421a211fde27183141be583bb177b9 SHA-1: 12b24b5c534e11921029d477037841d54f7b56a4 SHA-256: ac732f0d62c9ef228f04971a94c9337be4723531187a4042c8b2fc227078fa0d
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to known malicious infrastructure. Additionally, PDF_SEO_LINK_FARM indicates a large number of external links, many hosted on cdn.shopify.com, likely to obscure the malicious redirector. The document body contains the URL https://ttraff.cc/pify?keyword=affixes+worksheet+pdf+grade+3, which is the primary indicator of malicious intent, likely serving as a lure for further malicious activity.

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=affixes+worksheet+pdf+grade+3 In PDF document text
    • http://rewiz.babyblueeyesragdolls.com/uploads/1/3/1/3/131398455/ranuli_zutotut.pdfIn PDF document text
    • http://files.timothygage.com/uploads/1/3/1/4/131453540/polosekajoj.pdfIn PDF document text
    • http://files.cucornell.org/uploads/1/3/0/7/130775653/wegutalasux.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8648/7456/files/atomistique_chimie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7127/4146/files/vavekazi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xozujegemuzudileruzodedus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6204/8421/files/digital_electronics_vtu_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7710/7865/files/simon_sinek_find_your_why.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5116/2523/files/61045646792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/61054549788.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7356/7901/files/53095078683.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4757/4943/files/14338317476.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0816/2981/files/64507082231.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8271/8115/files/bantu_education.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7192/9496/files/52672595542.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A26 5648 bytes
SHA-256: 3d30aa50a1c3aeb15469f091727ab9c1e65f5c17b96ec736f3c484abdc91ae19
font_01_sfnt_off00005d6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D6E 6148 bytes
SHA-256: 0b8363bc9e07cf89205331d27bc1c31e4fc91592bb846ce71245372e642e4983
font_02_sfnt_off00006d4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D4D 9812 bytes
SHA-256: 16878159e6e96aa402566764dc22424950369b3e2fcdfabfd1bab2f7330a4147