Malicious PDF — malware analysis report

Static analysis result for SHA-256 644cea29df1b42c4…

MALICIOUS

PDF

67.1 KB Created: 2020-08-11 20:42:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 83d018cdb73247c3427301c226f0cdda SHA-1: bcc22bedac5620752c4c0f641a5f188504202fda SHA-256: 644cea29df1b42c42e9a07a96a1a4189000625f98127e81eecd15523a08a3cce
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, suggesting a phishing or scam attempt. The embedded URL 'https://ttraff.cc/pify?keyword=ajax+tutorial+pdf+with+examples' is a known malicious redirector. The document body, though heavily obfuscated, contains references to 'Ajax tutorial pdf with examples' and the malicious URL, reinforcing the lure. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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.cc/pify?keyword=ajax+tutorial+pdf+with+examples In PDF document text
    • http://files.impulsehair.com/uploads/1/3/0/8/130874583/927c94869dcd5d8.pdfIn PDF document text
    • http://files.nhlogcabinrental.com/uploads/1/3/0/7/130776590/b6cfdd137aade.pdfIn PDF document text
    • http://files.liveonlinetoursoftheworld.com/uploads/1/3/2/6/132681749/c2e019d.pdfIn PDF document text
    • http://files.cupanifashion.com/uploads/1/3/1/4/131409761/zejafitopalusadaxima.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/1/0431/4664/1570/files/34926927621.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4488/1059/files/rozidopidomopoxudafazino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7405/1493/files/working_of_2_stroke_si_engine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0077/2254/files/19786178473.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0798/1214/files/89593011427.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9202/6271/files/7160087702.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6888/3098/files/8188897524.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8524/1256/files/nosuga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1304/4386/files/etc_folder_windows.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7417/4622/files/56141696290.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1221/7241/files/65956139328.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0718/0954/files/zesuvelefebepopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7749/1105/files/26926754491.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 6

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_off0000ba85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA85 5508 bytes
SHA-256: d0303f95c2fe3822aaacd2efcf3a9b2ab00d5751923ef36f7101934ff173f4f5
font_01_sfnt_off0000cd3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD3B 16116 bytes
SHA-256: 3df8efc52e198678d6c0f62b2c37ad5aff27cef4b90c9060740eb50339fa166b

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