Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a17225783b13d13…

MALICIOUS

PDF

46.6 KB Created: 2020-08-24 10:27:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 466896fe1d4c460630362dd5a25c601e SHA-1: 5aa2197113f22ae1c38079ba9d5499869df05da8 SHA-256: 1a17225783b13d13fc018fb40175c1a6b7c6189ce2762b14145ec81d8000043d
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to obscure the final destination. The document body and heuristics indicate a lure related to 'backup app android su pc', suggesting a social engineering attempt to trick the user into clicking the malicious link. The presence of numerous external PDF links, many hosted on Shopify, points to a link farm strategy, likely for SEO poisoning or to distribute malicious content.

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=backup+app+android+su+pc In PDF document text
    • http://juwabuve.writtenapocalypse.com/uploads/1/3/0/8/130874482/lolulew-lufegigumogo-wudesowozuwe.pdfIn PDF document text
    • http://tiguluju.nextbillionventures.com/uploads/1/3/1/3/131384609/4740784.pdfIn PDF document text
    • http://zufotiro.sayyestothecake.ca/uploads/1/3/1/4/131437812/274e0.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/1/0436/9799/5941/files/agnes_grey_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4654/1211/files/callan_method_book_5_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7212/6117/files/11142460930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0165/1105/files/towosoxorekufuxasaxivat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2157/4049/files/suxeguf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9607/0549/files/free_online_language_translation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6821/9799/files/directivity_and_gain_of_antenna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5460/4198/files/80073399147.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0124/9955/files/blacksad_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/sunupudisus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/3033/9735/files/delete_browsing_history_in_google_chrome_android.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_off00007954.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7954 5148 bytes
SHA-256: 215971517558fc2e3854b3ec29f24388ff9b960529c8315f5f09c44a3588cd89
font_01_sfnt_off00008add.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ADD 10196 bytes
SHA-256: c5c3d1ccca8cc7c2253a8a0c6ba57a83d0f78478900d1f48f6a214718affcb37

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