Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a8d445fa9d1f9ab…

MALICIOUS

PDF

45.2 KB Created: 2020-08-17 04:01:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d77258a75ce15b4e216785c543059304 SHA-1: f9509df65b8a3d78fbe26d2398ee2ce3801d0fef SHA-256: 7a8d445fa9d1f9abcf2cb0622b34e8f8f271f8f4a12a67cdf29647f3ba1b0197
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to a known malicious URL, ttraff.com, which is flagged as a redirector. The document body, though heavily obfuscated, contains text related to 'powered by android' and the redirector URL, suggesting a lure for a phishing or scam operation. The presence of numerous external PDF links further indicates a link farm or redirection strategy.

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=powered+by+android+screen+stuck In PDF document text
    • http://gifake.dceoralhistoryproject.org/uploads/1/3/0/7/130739845/98ab0ce00eeb.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/1/0437/7152/7325/files/98705845798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2991/1957/files/wintrobe_s_clinical_hematology_12th_edition_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5018/0503/files/gesupozomorul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0589/1992/files/chilton_manual_torrent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3106/8825/files/nubunirarudovekif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0336/2973/files/starcraft_zerg_units.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6913/6280/files/arduino_uart_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/5794/1402/files/arnold_toynbee.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7266/0390/files/92960228486.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0707/4723/files/16866494254.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7599/3764/files/tubosukaguvijesajipifur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8249/8716/files/kosego.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5567/6568/files/85676466682.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1557/7504/files/bufisana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7766/4929/files/61694474824.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006402.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6402 5184 bytes
SHA-256: 167bdaec7bfd8aa3d4365fe2215bf967325bd61181a14e1ab816d93e67f1fc52
font_01_sfnt_off000075c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75C3 10464 bytes
SHA-256: 997fea4b524c4e7b4bdc24dff8862d334fb545fe97bc5d6fc2591f2711f64c58
font_02_sfnt_off00009982.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9982 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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