Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bba782f31f257e1…

MALICIOUS

PDF

49.0 KB Created: 2020-08-03 16:39:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 02a51e01d6f79f4f127473d198dc6402 SHA-1: 4103915603f3f969a42f825962827a1e978b468e SHA-256: 0bba782f31f257e173dd0496550d0a7e347aab5b057638158d0f7ce6ca1e4909
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains text related to 'effective email writing skills' and includes the malicious redirector URL, suggesting a phishing or scam lure. The ML classifier strongly indicated maliciousness, and the PDF structure itself was flagged for linking to a large number of external PDFs, likely for SEO manipulation to increase visibility of the malicious content.

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=effective+email+writing+skills+pdf In PDF document text
    • http://files.secondsundayride.org/uploads/1/3/0/8/130874305/morune.pdfIn PDF document text
    • http://files.silverrunceramics.com/uploads/1/3/2/7/132741029/zafijodimalasu-xiwetuzabosu-guxudu.pdfIn PDF document text
    • http://files.sueannecelebrant.com/uploads/1/3/1/4/131437351/26ff42c.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/1/0434/8801/8594/files/dabemelebej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8039/8486/files/rixitutuvejibedazisujoxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9471/2228/files/2589518942.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/26450106566.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9154/2681/files/how_to_limit_decimal_places_in_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6524/3803/files/jipojolanoputisewipuzobuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7935/1976/files/disuteviliwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3833/2312/files/92901547371.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4391/2854/files/mopos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1769/1559/files/fiwebobebowatipaxekavejo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9041/0658/files/60700934820.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1205/5463/files/mapigedolafefurofoxumap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4126/8647/files/77691435537.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5905/9615/files/56953727718.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 8

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_off00008043.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8043 5648 bytes
SHA-256: e24795db158a092b456ba65781daa598e01a3c92f2683aff85ebcd12de9a3eee
font_01_sfnt_off00009386.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9386 10468 bytes
SHA-256: 5d10e3c0ac71341311615bc1eb5e7f1197cc5ea8fa7242e18ffeeb55691932a6

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