Malicious PDF — malware analysis report

Static analysis result for SHA-256 88aec1f9eb9d1b8e…

MALICIOUS

PDF

46.8 KB Created: 2020-08-14 23:01:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 940442e15767f2585114c4ac2f7da89f SHA-1: 18119e80ddbb9a0d08999568c986954436c0e300 SHA-256: 88aec1f9eb9d1b8ef1d4265e880a1b4f798a81d2ea123d00c16a3ea65debbfd1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirection and a link farm, suggesting an attempt to manipulate search engine results or lead users to malicious content. The primary malicious URL identified is a redirector, which is a common tactic for phishing or malware distribution. No scripts were extracted, limiting the analysis of direct payload execution.

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=jesus+song+aradhana+stuti+aradhana+free In PDF document text
    • http://files.sussner.info/uploads/1/3/0/8/130874599/nawexasul.pdfIn PDF document text
    • http://paxusegar.iaeast-ptia.com/uploads/1/3/0/7/130775934/6531463.pdfIn PDF document text
    • http://vasaziloz.mrisar.org/uploads/1/3/1/4/131453134/ad89007bf.pdfIn PDF document text
    • http://files.en.yvesalizahno.com/uploads/1/3/1/4/131437689/sopotesikadebi.pdfIn PDF document text
    • http://files.cripcouture.org/uploads/1/3/1/8/131857758/3329833.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3695/8104/files/19072954006.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1787/0239/files/33021266262.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2704/6298/files/literature_review_on_automatic_voltage_regulator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/64228699698.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6113/3990/files/82747024677.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0902/2886/files/fitan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9885/7891/files/mudilemuwun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6885/8280/files/xipofumopikalogasad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9107/3947/files/68367208123.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8746/9471/files/72529138245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2348/2525/files/22716835559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2848/0154/files/83751351876.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 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006101.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6101 5124 bytes
SHA-256: 22cf783d2a4be624b5938759a11adc4ba862a638f367fba2201bbb8ad7c88654
font_01_sfnt_off00007263.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7263 14668 bytes
SHA-256: 0261ba9cf70c5a4833c61c203c79b6109f10a1b637057ded983c2703b1eff135
font_02_sfnt_off0000a104.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA104 3364 bytes
SHA-256: b5b37f3a52aa1e5e67265ec3641cc3487003d3c865a6905b2480f0a0b97f897c

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