Malicious PDF — malware analysis report

Static analysis result for SHA-256 124cb477bdd9e7db…

MALICIOUS

PDF

47.1 KB Created: 2020-07-31 12:28:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1b5dd565aa6c56902e3c96fca2f34dc2 SHA-1: 3a6662b41916720498c8023d703374ecdba37ba8 SHA-256: 124cb477bdd9e7db30fa4d70282d1e1c85154073045794d64be650e917ce7ae1
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to 'advantages and disadvantages of database management system pdf'. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to a phishing or malware distribution site.

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.ru/pify?keyword=advantages+and+disadvantages+of+database+management+system+pdf In PDF document text
    • http://files.oetprep.com/uploads/1/3/1/4/131454024/boninojavugesiwa.pdfIn PDF document text
    • http://files.stagecoachtrailers.com/uploads/1/3/2/6/132682564/rikugorumanowi_muwulovatobur_pibuzozona.pdfIn PDF document text
    • http://files.drsusankentarce.com/uploads/1/3/1/4/131438392/217936eee3a2ee.pdfIn PDF document text
    • http://files.sedistrictpaha.com/uploads/1/3/0/8/130813781/0c8e3bac.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/1/0437/0595/8565/files/zivawabeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4121/6919/files/52174446399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4490/5884/files/tupegesuzepanaxojabiforax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2995/4721/files/47263262940.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7162/5634/files/29580459574.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6857/1294/files/miwix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/15503747574.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/50751207741.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7870/4549/files/zorabepewo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3506/5510/files/80989648793.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8526/7097/files/88016405487.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_off00007965.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7965 5312 bytes
SHA-256: eda5c8514afa8fbf2cbd28bf29fb371429785d233854e6ae73fc70bbd1825df4
font_01_sfnt_off00008b71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B71 10436 bytes
SHA-256: 4f1700dcca114c873c482e71e69ad891f22f1c73300639681d8c90af4102da3d

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