Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a4814f79e54f8ef…

MALICIOUS

PDF

191.8 KB Created: 2020-08-15 05:44:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b5563bb80b520a457a1feefdb35ae5ad SHA-1: 3e736959b7a77f335c25dc26115baac3b431d47c SHA-256: 1a4814f79e54f8ef2b5f69424adbceae30788650d05f5d520ed2f787de92a285
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=americanah+summary+pdf'. This indicates the document's primary purpose is to lure the user to a potentially harmful external site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence for the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • 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=americanah+summary+pdf In PDF document text
    • http://files.magia-metachemica.net/uploads/1/3/2/6/132695582/xazifadikos-mitako.pdfIn PDF document text
    • http://files.bonneygirlphotography.com/uploads/1/3/2/6/132681204/sapoxorufewodod.pdfIn PDF document text
    • http://files.incitecompany.org/uploads/1/3/0/7/130738711/a0600b132.pdfIn PDF document text
    • http://files.sunsolutionsolar.com/uploads/1/3/1/4/131438260/683057.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/1/0432/5546/4104/files/warframe_kubrow_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8475/0747/files/xejururojemenevuvesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0962/1664/files/pebopo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0090/5373/files/efeitos_da_atmosfera_terrestre.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8737/9094/files/63146114962.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9807/0426/files/psychology_of_web_design.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5007/3240/files/new_york_city_minecraft.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3015/0309/files/94399039769.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/6071/7726/files/fumogovaremebad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3095/3630/files/best_multiplayer_ps2_games.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9635/9580/files/brunswick_school_of_dance_uniform.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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
stream_007_off0002d20e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2D20E 19504 bytes
SHA-256: f71b06078c23f538b03047cdc007535d35072d6f50558c631178247031e5a958
font_00_sfnt_off00029027.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29027 5456 bytes
SHA-256: 3ec62d6a35e80a84a7199d97d62cd2610accbd2efaee9b2890d97f17406279b0
font_01_sfnt_off0002a284.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A284 15440 bytes
SHA-256: 27f7d3acf64cb30313116a5a40c92b62fce7b940c1e1dbaa5e4da44e6ffda50e

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