Malicious PDF — malware analysis report

Static analysis result for SHA-256 8575744bc757f2e3…

MALICIOUS

PDF

40.2 KB Created: 2020-08-20 00:03:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1b818ab0ba5ca8956596a378297d2c5b SHA-1: 619920cc7e453ee63a8e42e4b6120cc264457599 SHA-256: 8575744bc757f2e3ff473b6c7b11f82bae5c82c3003946b3e6b17e544ecaa3b7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic firing for linking to known malicious redirector infrastructure. The document body, though partially obfuscated, includes the URL 'https://ttraff.com/pify?keyword=must+have+v3+worksheet', which is identified as a malicious redirector. This suggests the document is designed to redirect users to malicious sites, likely for phishing or to download further malware.

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=must+have+v3+worksheet In PDF document text
    • http://diripaki.braemarmensclub.com/uploads/1/3/1/4/131438563/1693716.pdfIn PDF document text
    • http://files.dragonchoirs.net/uploads/1/3/0/7/130776619/6051802.pdfIn PDF document text
    • http://rimulipi.andersonboergoats.com/uploads/1/3/0/7/130738732/dawopusi.pdfIn PDF document text
    • http://files.austindemaille.com/uploads/1/3/1/4/131453522/6794a3b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0108/4064/files/english_guide_for_class_12_sindh_board.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5501/4298/files/pipafemututovuzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1935/3767/files/74499648951.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4886/9786/files/lemimiweved.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5463/6966/files/48766864231.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0462/4021/files/92836293764.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0760/5910/files/funza_lushaka_application_form_2020_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7660/7390/files/bennett_mechanical_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3422/9398/files/98367396974.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6796/4580/files/juvadulen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3016/7203/files/sawan_barse_tarse_song_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2566/9028/files/guxemidilewukozidosal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2742/3654/files/45121248709.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005195.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5195 4852 bytes
SHA-256: 9ab03b29b6496ebcb3036eeb5c28752e1e9c9fb3ddb8eaab6f86c5c1e0992cd4
font_01_sfnt_off00006245.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6245 10528 bytes
SHA-256: c6dfb8f4cf165104cf4100b4126f02a41648a3c9d893dc6bad6e0399665e9b30
font_02_sfnt_off00008632.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8632 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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