Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f505966fdd2ff34…

MALICIOUS

PDF

43.5 KB Created: 2020-08-11 16:00:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2f4172f8e8032f14f1c5ac8b30a5699c SHA-1: 2e230d639e30a0fee77dc4be3b323626cb3a39d5 SHA-256: 5f505966fdd2ff34413656317414ea96ff39bfe9e3d944cf8101c11d164df9bc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of links to external resources, many of which are hosted on Shopify and appear to be part of an SEO link farm. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=boats+and+streams+questions+with+answers+pdf', suggesting a phishing or malware distribution attempt. The ML classifier also strongly indicated maliciousness.

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=boats+and+streams+questions+with+answers+pdf In PDF document text
    • http://files.naturaholistics.com.au/uploads/1/3/0/8/130814902/bdf1a24.pdfIn PDF document text
    • http://xinirexif.fryeins.com/uploads/1/3/1/3/131380429/1057526.pdfIn PDF document text
    • http://gefuta.orderfreshmed.com/uploads/1/3/0/8/130874493/ea2c3dc1dd41.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/1/0438/4099/5490/files/jepibipigipomanaru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1977/8720/files/bharti_airtel_annual_report_2020_09.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3396/0341/files/41629971792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7652/5984/files/47226297394.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/4520/3618/files/express_js_tutorial_point.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7184/0161/files/avenged_sevenfold_buried_alive_tab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4100/5480/files/33328512642.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6915/2159/files/38795094757.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6028/0982/files/79186210800.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3160/8989/files/79485413300.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 3

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_off00005fd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD5 5516 bytes
SHA-256: db97524054abb576e9ac691422b58a10ca50e006d13651becea295b03bcce8ed
font_01_sfnt_off00007273.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7273 14788 bytes
SHA-256: 94b474dff9d4115e54fdea14cbc88459a244df8a36e008f0b44726af52f4426f

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