Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e3fab1391ba28e0…

MALICIOUS

PDF

48.4 KB Created: 2020-08-22 09:14:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 86472b9c620a91933d32f571b2d5cc96 SHA-1: 954bdc3dbd0a13bb3b6d8f202b90c4294500f57e SHA-256: 7e3fab1391ba28e0c6cfa8105447c7dc21c7f7692d92dfdbcadd5cf2fb7c5c5e
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains numerous links, many of which point to an SEO redirector infrastructure. The primary redirector URL, https://ttraff.cc/pify?keyword=photo+background+apps+for+android, is identified as malicious. The document body and heuristics suggest a lure for free downloads, likely leading to malware or phishing content. The malformed stream length heuristic also indicates potential exploit activity within the PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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=photo+background+apps+for+android In PDF document text
    • http://vativuv.oursaviorsdevilslake.org/uploads/1/3/1/3/131383314/3003977.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/1/0429/3135/5807/files/types_of_crop_rotation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2621/7120/files/sparkol_videoscribe_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4306/0901/files/50354677953.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0416/5285/files/41148268998.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8236/6629/files/17502805181.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/2556/4583/files/vevibezitu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2325/4179/files/data_types_in_r.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7922/1919/files/sword_art_online_vol_15.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8158/7093/files/chemical_periodicity.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4157/6344/files/wegmans_catering_menu_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6535/2095/files/84850429021.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7955/7529/files/36484158986.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2208/1448/files/mesoxedapotubedida.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2887/3367/files/simple_carburetor.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_off00007dd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DD3 5588 bytes
SHA-256: 17b127ed5f848c12acd3f419b89a27dd035c239a20e65980c14afe8028a825e1
font_01_sfnt_off000090c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90C7 10360 bytes
SHA-256: c74aa7c3f75ef7f7cb58b7adc05c3fd01da23cbfaeb2a385cf62afa6e5108ef5

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