Malicious PDF — malware analysis report

Static analysis result for SHA-256 221e7d9e78cd63c6…

MALICIOUS

PDF

44.3 KB Created: 2020-08-06 03:05:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5732be0a280b86f81e48eb0acd423d7c SHA-1: 2cefeef029d06fa6c2d09609633db8904b32b719 SHA-256: 221e7d9e78cd63c6f4bde13415cba077b620ced1b058b62f84817e72290d5bd1
202 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains and one critical link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=descriptive+analysis+journal+pdf'. The presence of a visual download button lure further supports the malicious intent of redirecting users to potentially harmful content.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=descriptive+analysis+journal+pdf In PDF document text
    • http://files.blacksburgmiddlelibrary.com/uploads/1/3/2/6/132682745/duxamisor_xivid.pdfIn PDF document text
    • http://files.catgirljourney.com/uploads/1/3/1/3/131381607/losalaroburi.pdfIn PDF document text
    • http://giludus.golfwithmickey.com/uploads/1/3/0/7/130776791/gosomagafigupi_veriralaseter_zakewubuwuse.pdfIn PDF document text
    • http://files.ourscienceclass.net/uploads/1/3/2/6/132681219/rowuxaretoxixe.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/1/0431/4028/4577/files/83641108508.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8613/5961/files/16581138767.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9839/1196/files/guzijowaritini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9305/6933/files/eager_loading_sequelize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7754/9726/files/31292860621.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0432/0154/files/mp4_to_wav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9018/2297/files/28735642608.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7140/6237/files/wenagukeluwixixefidotik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8494/6333/files/jaguzapikedijexa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6971/9199/files/fapezetanefo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4871/3896/files/romopegumirenurepomowom.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D92 5384 bytes
SHA-256: b32112b7a4fd4cc751762e4f6c0e47e896ebe8052aa1f70343a8e21e01cf6e4e
font_01_sfnt_off00008010.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8010 10556 bytes
SHA-256: 77f68fd38fe3ce6051cce9fc18467beefb26608453112233bc10ebeb34978462