Malicious PDF — malware analysis report

Static analysis result for SHA-256 6471d09d7f7214f2…

MALICIOUS

PDF

72.8 KB Created: 2020-08-21 17:27:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4175dc98e3d99bdf72ab68970b38e74a SHA-1: 27f367f2d02f4a3b025de6cff8c381f5e058b9fe SHA-256: 6471d09d7f7214f25dfd35e9d87bf13767cf0c37ef12dac38c40f1aee30d60f3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.cc) known for malicious activity. The document body, though heavily obfuscated, includes the same redirector URL and benign-looking Shopify links, suggesting a link farm or phishing lure. The ML classifier strongly indicates maliciousness, and the presence of numerous external links points towards an attempt to drive traffic to malicious sites or distribute further payloads.

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=splatoon+2+spicy+calamari+inkantation In PDF document text
    • http://files.doorwaystoadventure.com/uploads/1/3/0/9/130969704/dawimijo.pdfIn PDF document text
    • http://sotij.waynerichards.org/uploads/1/3/1/4/131453574/tifuwozixivibi.pdfIn PDF document text
    • http://files.personalcheftony.com/uploads/1/3/0/7/130739621/piraxu.pdfIn PDF document text
    • http://rakoj.friendsofkirkleyhall.org/uploads/1/3/2/3/132303382/nagere.pdfIn PDF document text
    • http://files.aldersgatebutte.org/uploads/1/3/1/3/131379696/xomuni.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/1/0440/6224/5029/files/active_voice_rules.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3917/6342/files/kosibegifu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4166/0826/files/accuweather_fayetteville_nc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9508/9559/files/basidiomycota_characteristics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57790570823.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0807/7473/files/72185444221.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0523/8692/files/pifebugir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1582/3772/files/86287509443.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4843/3829/files/pros_and_cons_of_social_media.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4007/9005/files/1468178686.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9400/7201/files/wotakirafekaluvemube.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1290/6405/files/44425566307.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4783/0183/files/46659014811.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fakuwonilojovaxibudebu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000099fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99FA 22044 bytes
SHA-256: 0543a07b5874686f3d5429741a5f666ddbbc9db53611fbd8c52c1b397613c7b2
font_01_sfnt_off0000dff3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFF3 5480 bytes
SHA-256: 30e572f83a011f3cd7f9673a36e80b9b3476b84ee2111bfc16bf36fb80d12eb1
font_02_sfnt_off0000f280.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF280 10316 bytes
SHA-256: 7ac7d8db2223a24d6f5603c690fa7ccd6958635498c995275bcc2ca68b48e1a0