Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e2bd9d8c64fff0b…

MALICIOUS

PDF

49.6 KB Created: 2020-07-19 19:39:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e8fc5eceb29f30c5173b72303c3490de SHA-1: a602b7c8fbd1635654f0939726b71c2380f5c9c9 SHA-256: 2e2bd9d8c64fff0b2cff280c6dceaf4ea02d57d06b30c770695faf5e6c03488c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. Additionally, PDF_SEO_LINK_FARM suggests a large number of external links are present, likely for SEO manipulation or to host further malicious content. The document body, though obfuscated, contains text related to 'Dwyer mark ii manometer instructions', which appears to be a lure. The primary malicious IOC is the redirector URL.

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.com/pify?keyword=dwyer+mark+ii+manometer+instructions In PDF document text
    • http://files.knittygrittysyr.com/uploads/1/3/0/7/130775653/namififozemux-lisabipalemise.pdfIn PDF document text
    • http://files.tbreeden.com/uploads/1/3/1/3/131382590/taxosiramo.pdfIn PDF document text
    • http://files.choonricollection.com/uploads/1/3/0/7/130775537/8473027.pdfIn PDF document text
    • http://files.realifewsp.net/uploads/1/3/1/4/131438582/7417058.pdfIn PDF document text
    • http://files.stjepanpepiskuric.com/uploads/1/3/0/9/130969075/3af1e5029b9bcc.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/1/0431/8022/8768/files/pibozitiwuxorixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7047/9766/files/47737876880.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5149/1236/files/99723384794.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/87219022873.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2186/8960/files/90771483297.pdfIn PDF document text
    • https://wifobawixobi.files.wordpress.com/2020/06/tatarugipigabive.pdfIn PDF document text
    • https://jifolidudoj.files.wordpress.com/2020/07/15978124603.pdfIn PDF document text
    • https://wafinafu542781998.files.wordpress.com/2020/06/pizukujawudasapanopox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0757/3157/files/82503906067.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5014/7745/files/nesivakusamilipodob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5650/4744/files/88632741225.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pesaveput.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5519/4011/files/xirofopadajabegovazab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nojigepinipefonumupitos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6916/1110/files/63534708731.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9861/9557/files/sobipojoko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8702/0703/files/38936949706.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007c23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C23 5052 bytes
SHA-256: 3b2d96d1df22f03336b1b59f442853c20ec2fe1b83f04330ee64c7d33c1cd6f5
font_01_sfnt_off00008d54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D54 13076 bytes
SHA-256: 483922f2c868a16afea9d01abd6f18d2037466eace5d3506ccc73a82b3ada9cd